25 expenses our level of profitability is also impacted by our expenses , including direct costs to support our revenue such as bandwidth and co-location costs . we have observed the following trends related to our profitability in recent years : network bandwidth costs represent a significant portion of our cost of revenue . historically , we have been able to mitigate increases in these costs by reducing our network bandwidth costs per unit and investing in internal-use software development to improve the performance and efficiency of our network . our total bandwidth costs may increase in the future as a result of expected higher traffic levels and serving more traffic from higher cost regions . we will need to continue to effectively manage our bandwidth costs to maintain current levels of profitability . co-location costs are also a significant portion of our cost of revenue . by improving our internal-use software and managing our hardware deployments to enable us to use servers more efficiently , we have been able to manage the growth of co-location costs . we expect to continue to scale our network in the future and will need to continue to effectively manage our co-location costs to maintain current levels of profitability . due to the fixed nature of some of our co-location and bandwidth costs over a minimum time period , it may not be possible to quickly reduce those costs . if our revenue growth rate declines , our profitability could decrease . payroll and related compensation costs have grown as we have increased headcount to support our revenue growth and strategic initiatives . we increased our headcount by 406 employees during the year ended december 31 , 2016 . during the year ended december 31 , 2015 , we increased our headcount by 979 employees . we expect to continue to hire additional employees , both domestically and internationally , in support of our strategic initiatives . fluctuations in foreign currency exchange rates have also impacted our reported results . revenue and expenses of our operations outside of the u.s. are important contributors to our overall financial performance , and as currencies have weakened against the u.s. dollar , our revenue has been negatively impacted and our expenses have been positively impacted . if foreign currency exchange rates during the year ended december 31 , 2016 had remained the same as exchange rates during the year ended december 31 , 2015 , our revenue would have increased by 7 % as opposed to 6 % . conversely , diluted earnings per share would have decreased by 1 % as opposed to increasing by 1 % . if foreign currency exchange rates during the year ended december 31 , 2015 had remained the same as exchange rates during the year ended december 31 , 2014 , our revenue would have increased by 16 % as opposed to 12 % . similarly , diluted earnings per share would have increased by 2 % as opposed to decreasing 3 % had exchange rates remained constant during the same period . in recent years , we have used strategic acquisitions to complement and augment existing technological capabilities . during 2016 , 2015 and 2014 we completed various acquisitions which were immaterial to our financial results as a whole during those years , but have contributed to increases in our revenue and level of expenses . also in february 2014 , we completed an offering of $ 690.0 million in par value of convertible senior notes . the notes do not bear regular interest , but have an effective interest rate of 3.2 % attributable to the conversion feature . 26 results of operations the following sets forth , as a percentage of revenue , consolidated statements of income data for the years indicated : replace_table_token_3_th revenue revenue during the periods presented is as follows ( in thousands ) : replace_table_token_4_th the increase in our revenue from 2015 to 2016 was primarily the result of continued strong growth from our cloud security solutions , which grew 43 % . our web performance solutions also contributed to our revenue growth in 2016. our overall revenue growth rate was lower than it has been in the past , primarily due to the `` do-it-yourself `` efforts of our internet platform customers , some of which have developed internal infrastructure to deliver more of their media content themselves rather than rely on our media services . revenue from these six customers ( amazon , apple , facebook , google , microsoft and netflix ) in the aggregate was $ 250.4 million and $ 379.3 million for the years ended december 31 , 2016 and 2015 , respectively . the increase in our revenue from 2014 to 2015 was driven by higher demand for our services across all of our solutions and geographies , with particularly strong growth from our cloud security solutions . revenue from our internet platform customers was $ 379.3 million and $ 358.9 million for the years ended december 31 , 2015 and 2014 , respectively . 27 the following table quantifies the contribution to revenue from our solution categories for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_5_th the increases in performance and security solutions revenue for 2016 as compared to 2015 , and 2015 as compared to 2014 , were due to increased demand across all major product lines , with especially strong growth in our cloud security solutions . cloud security solutions revenue for the year ended december 31 , 2016 was $ 364.9 million , as compared to $ 254.4 million and $ 170.0 million for the years ended december 31 , 2015 and 2014 , respectively . story_separator_special_tag stock-based compensation and amortization of capitalized stock-based compensation – although stock-based compensation is an important aspect of the compensation paid to our employees , the grant date fair value varies based on the stock price at the time of grant , varying valuation methodologies , subjective assumptions and the variety of award types . this makes the comparison of our current financial results to previous and future periods difficult to evaluate ; therefore , we believe it is useful to exclude stock-based compensation and amortization of capitalized stock-based compensation from our non-gaap financial measures in order to highlight the performance of our core business and to be consistent with the way many investors evaluate our performance and compare our operating results to peer companies . acquisition-related costs – acquisition-related costs include transaction fees , advisory fees , due diligence costs and other direct costs associated with strategic activities . in addition , subsequent adjustments to our initial estimated amounts of contingent consideration and indemnification associated with specific acquisitions are included within acquisition-related costs . these amounts are impacted by the timing and size of the acquisitions . we exclude acquisition-related costs from our non-gaap financial measures to provide a useful comparison of our operating results to prior periods and to our peer companies because such amounts vary significantly based on the magnitude of our acquisition transactions . 34 restructuring charges – we have incurred restructuring charges that are included in our gaap financial statements , primarily related to workforce reductions and estimated costs of exiting facility lease commitments . we exclude these items from our non-gaap financial measures when evaluating our continuing business performance as such items vary significantly based on the magnitude of the restructuring action and do not reflect expected future operating expenses . in addition , these charges do not necessarily provide meaningful insight into the fundamentals of current or historical operations of our business . benefit from adoption of software development activities – in 2014 , we recognized a benefit to non-income related tax expense associated with the adoption of software development activities . we exclude this item from our non-gaap financial measures because transactions of this nature occur infrequently and are not considered part of our core business operations . amortization of debt discount and issuance costs and amortization of capitalized interest expense – in february 2014 , we issued $ 690 million of convertible senior notes due 2019 with a coupon interest rate of 0 % . the imputed interest rate of the convertible senior notes was approximately 3.2 % . this is a result of the debt discount recorded for the conversion feature that is required to be separately accounted for as equity under gaap , thereby reducing the carrying value of the convertible debt instrument . the debt discount is amortized as interest expense together with the issuance costs of the debt . all of our interest expense is comprised of these non-cash components and is excluded from management 's assessment of our operating performance because management believes the non-cash expense is not representative of ongoing operating performance . gains and losses on investments – we have recorded gains and losses from the disposition and impairment of certain investments . we believe excluding these amounts from our non-gaap financial measures is useful to investors as the types of events giving rise to them occur infrequently and are not representative of our core business operations and ongoing operating performance . legal matter costs – we have incurred losses from the settlement of legal matters and costs with respect to our internal u.s. foreign corrupt practices act investigation in addition to the disgorgement we were required to pay to resolve it . we believe excluding these amounts from our non-gaap financial measures is useful to investors as the types of events giving rise to them are not representative of our core business operations . income tax effect of non-gaap adjustments and certain discrete tax items – the non-gaap adjustments described above are reported on a pre-tax basis . the income tax effect of non-gaap adjustments is the difference between gaap and non-gaap income tax expense . non-gaap income tax expense is computed on non-gaap pre-tax income ( gaap pre-tax income adjusted for non-gaap adjustments ) and excludes certain discrete tax items ( such as recording or releasing of valuation allowances ) , if any . we believe that applying the non-gaap adjustments and their related income tax effect allows us to highlight income attributable to our core operations . the following table reconciles gaap income from operations to non-gaap income from operations and non-gaap operating margin for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_16_th 35 the following table reconciles gaap net income to non-gaap net income for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_17_th the following table reconciles gaap net income per diluted share to non-gaap net income per diluted share for the years ended december 31 , 2016 , 2015 and 2014 ( share in thousands ) : replace_table_token_18_th non-gaap net income per diluted share is calculated as non-gaap net income divided by diluted weighted average common shares outstanding . gaap diluted weighted average shares outstanding are adjusted in non-gaap per share calculations for the shares that would be delivered to us pursuant to the note hedge transactions entered into in connection with the issuance of our convertible senior notes . under gaap , shares delivered under hedge transactions are not considered offsetting shares in the fully-diluted share calculation until they are delivered . however , we would receive a benefit from the note hedge transactions and would not allow the dilution to occur , so management believes that adjusting for this benefit provides a meaningful view of net income per share . unless and until our weighted average stock price is greater than $ 89.56 , the initial conversion price , there

cash provided by operating activities replace_table_token_20_th the increase in cash provided by operating activities for 2016 , as compared to 2015 , was primarily due to higher cash collection from customers due to increased revenue , and lower commissions and annual bonus payments due to lower award attainment levels . these increases to cash provided by operating activities were partially offset by higher cash paid for taxes during 2016 , as compared to 2015. accounts receivable days outstanding was 54 days as of the year ended december 31 , 2016 , compared to 59 days as of the year ended december 31 , 2015. the increase in cash provided by operating activities for 2015 as compared to 2014 , was primarily due to the decrease in cash paid for income taxes of $ 75.0 million versus $ 166.2 million for the years ended december 31 , 2015 and 2014 , respectively . the increase is also due to an increase in cash collections from customers as a result of increased revenue , offset by the increase in operating expenditures and the overall timing of our working capital payments . accounts receivable days outstanding was 59 days as of the year ended december 31 , 2015 , compared to 56 days as of the year ended december 31 , 2014 .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash provided by operating activities replace_table_token_20_th the increase in cash provided by operating activities for 2016 , as compared to 2015 , was primarily due to higher cash collection from customers due to increased revenue , and lower commissions and annual bonus payments due to lower award attainment levels . these increases to cash provided by operating activities were partially offset by higher cash paid for taxes during 2016 , as compared to 2015. accounts receivable days outstanding was 54 days as of the year ended december 31 , 2016 , compared to 59 days as of the year ended december 31 , 2015. the increase in cash provided by operating activities for 2015 as compared to 2014 , was primarily due to the decrease in cash paid for income taxes of $ 75.0 million versus $ 166.2 million for the years ended december 31 , 2015 and 2014 , respectively . the increase is also due to an increase in cash collections from customers as a result of increased revenue , offset by the increase in operating expenditures and the overall timing of our working capital payments . accounts receivable days outstanding was 59 days as of the year ended december 31 , 2015 , compared to 56 days as of the year ended december 31 , 2014 .
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 Suspicious Activity Report : 25 expenses our level of profitability is also impacted by our expenses , including direct costs to support our revenue such as bandwidth and co-location costs . we have observed the following trends related to our profitability in recent years : network bandwidth costs represent a significant portion of our cost of revenue . historically , we have been able to mitigate increases in these costs by reducing our network bandwidth costs per unit and investing in internal-use software development to improve the performance and efficiency of our network . our total bandwidth costs may increase in the future as a result of expected higher traffic levels and serving more traffic from higher cost regions . we will need to continue to effectively manage our bandwidth costs to maintain current levels of profitability . co-location costs are also a significant portion of our cost of revenue . by improving our internal-use software and managing our hardware deployments to enable us to use servers more efficiently , we have been able to manage the growth of co-location costs . we expect to continue to scale our network in the future and will need to continue to effectively manage our co-location costs to maintain current levels of profitability . due to the fixed nature of some of our co-location and bandwidth costs over a minimum time period , it may not be possible to quickly reduce those costs . if our revenue growth rate declines , our profitability could decrease . payroll and related compensation costs have grown as we have increased headcount to support our revenue growth and strategic initiatives . we increased our headcount by 406 employees during the year ended december 31 , 2016 . during the year ended december 31 , 2015 , we increased our headcount by 979 employees . we expect to continue to hire additional employees , both domestically and internationally , in support of our strategic initiatives . fluctuations in foreign currency exchange rates have also impacted our reported results . revenue and expenses of our operations outside of the u.s. are important contributors to our overall financial performance , and as currencies have weakened against the u.s. dollar , our revenue has been negatively impacted and our expenses have been positively impacted . if foreign currency exchange rates during the year ended december 31 , 2016 had remained the same as exchange rates during the year ended december 31 , 2015 , our revenue would have increased by 7 % as opposed to 6 % . conversely , diluted earnings per share would have decreased by 1 % as opposed to increasing by 1 % . if foreign currency exchange rates during the year ended december 31 , 2015 had remained the same as exchange rates during the year ended december 31 , 2014 , our revenue would have increased by 16 % as opposed to 12 % . similarly , diluted earnings per share would have increased by 2 % as opposed to decreasing 3 % had exchange rates remained constant during the same period . in recent years , we have used strategic acquisitions to complement and augment existing technological capabilities . during 2016 , 2015 and 2014 we completed various acquisitions which were immaterial to our financial results as a whole during those years , but have contributed to increases in our revenue and level of expenses . also in february 2014 , we completed an offering of $ 690.0 million in par value of convertible senior notes . the notes do not bear regular interest , but have an effective interest rate of 3.2 % attributable to the conversion feature . 26 results of operations the following sets forth , as a percentage of revenue , consolidated statements of income data for the years indicated : replace_table_token_3_th revenue revenue during the periods presented is as follows ( in thousands ) : replace_table_token_4_th the increase in our revenue from 2015 to 2016 was primarily the result of continued strong growth from our cloud security solutions , which grew 43 % . our web performance solutions also contributed to our revenue growth in 2016. our overall revenue growth rate was lower than it has been in the past , primarily due to the `` do-it-yourself `` efforts of our internet platform customers , some of which have developed internal infrastructure to deliver more of their media content themselves rather than rely on our media services . revenue from these six customers ( amazon , apple , facebook , google , microsoft and netflix ) in the aggregate was $ 250.4 million and $ 379.3 million for the years ended december 31 , 2016 and 2015 , respectively . the increase in our revenue from 2014 to 2015 was driven by higher demand for our services across all of our solutions and geographies , with particularly strong growth from our cloud security solutions . revenue from our internet platform customers was $ 379.3 million and $ 358.9 million for the years ended december 31 , 2015 and 2014 , respectively . 27 the following table quantifies the contribution to revenue from our solution categories for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_5_th the increases in performance and security solutions revenue for 2016 as compared to 2015 , and 2015 as compared to 2014 , were due to increased demand across all major product lines , with especially strong growth in our cloud security solutions . cloud security solutions revenue for the year ended december 31 , 2016 was $ 364.9 million , as compared to $ 254.4 million and $ 170.0 million for the years ended december 31 , 2015 and 2014 , respectively . story_separator_special_tag stock-based compensation and amortization of capitalized stock-based compensation – although stock-based compensation is an important aspect of the compensation paid to our employees , the grant date fair value varies based on the stock price at the time of grant , varying valuation methodologies , subjective assumptions and the variety of award types . this makes the comparison of our current financial results to previous and future periods difficult to evaluate ; therefore , we believe it is useful to exclude stock-based compensation and amortization of capitalized stock-based compensation from our non-gaap financial measures in order to highlight the performance of our core business and to be consistent with the way many investors evaluate our performance and compare our operating results to peer companies . acquisition-related costs – acquisition-related costs include transaction fees , advisory fees , due diligence costs and other direct costs associated with strategic activities . in addition , subsequent adjustments to our initial estimated amounts of contingent consideration and indemnification associated with specific acquisitions are included within acquisition-related costs . these amounts are impacted by the timing and size of the acquisitions . we exclude acquisition-related costs from our non-gaap financial measures to provide a useful comparison of our operating results to prior periods and to our peer companies because such amounts vary significantly based on the magnitude of our acquisition transactions . 34 restructuring charges – we have incurred restructuring charges that are included in our gaap financial statements , primarily related to workforce reductions and estimated costs of exiting facility lease commitments . we exclude these items from our non-gaap financial measures when evaluating our continuing business performance as such items vary significantly based on the magnitude of the restructuring action and do not reflect expected future operating expenses . in addition , these charges do not necessarily provide meaningful insight into the fundamentals of current or historical operations of our business . benefit from adoption of software development activities – in 2014 , we recognized a benefit to non-income related tax expense associated with the adoption of software development activities . we exclude this item from our non-gaap financial measures because transactions of this nature occur infrequently and are not considered part of our core business operations . amortization of debt discount and issuance costs and amortization of capitalized interest expense – in february 2014 , we issued $ 690 million of convertible senior notes due 2019 with a coupon interest rate of 0 % . the imputed interest rate of the convertible senior notes was approximately 3.2 % . this is a result of the debt discount recorded for the conversion feature that is required to be separately accounted for as equity under gaap , thereby reducing the carrying value of the convertible debt instrument . the debt discount is amortized as interest expense together with the issuance costs of the debt . all of our interest expense is comprised of these non-cash components and is excluded from management 's assessment of our operating performance because management believes the non-cash expense is not representative of ongoing operating performance . gains and losses on investments – we have recorded gains and losses from the disposition and impairment of certain investments . we believe excluding these amounts from our non-gaap financial measures is useful to investors as the types of events giving rise to them occur infrequently and are not representative of our core business operations and ongoing operating performance . legal matter costs – we have incurred losses from the settlement of legal matters and costs with respect to our internal u.s. foreign corrupt practices act investigation in addition to the disgorgement we were required to pay to resolve it . we believe excluding these amounts from our non-gaap financial measures is useful to investors as the types of events giving rise to them are not representative of our core business operations . income tax effect of non-gaap adjustments and certain discrete tax items – the non-gaap adjustments described above are reported on a pre-tax basis . the income tax effect of non-gaap adjustments is the difference between gaap and non-gaap income tax expense . non-gaap income tax expense is computed on non-gaap pre-tax income ( gaap pre-tax income adjusted for non-gaap adjustments ) and excludes certain discrete tax items ( such as recording or releasing of valuation allowances ) , if any . we believe that applying the non-gaap adjustments and their related income tax effect allows us to highlight income attributable to our core operations . the following table reconciles gaap income from operations to non-gaap income from operations and non-gaap operating margin for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_16_th 35 the following table reconciles gaap net income to non-gaap net income for the years ended december 31 , 2016 , 2015 and 2014 ( in thousands ) : replace_table_token_17_th the following table reconciles gaap net income per diluted share to non-gaap net income per diluted share for the years ended december 31 , 2016 , 2015 and 2014 ( share in thousands ) : replace_table_token_18_th non-gaap net income per diluted share is calculated as non-gaap net income divided by diluted weighted average common shares outstanding . gaap diluted weighted average shares outstanding are adjusted in non-gaap per share calculations for the shares that would be delivered to us pursuant to the note hedge transactions entered into in connection with the issuance of our convertible senior notes . under gaap , shares delivered under hedge transactions are not considered offsetting shares in the fully-diluted share calculation until they are delivered . however , we would receive a benefit from the note hedge transactions and would not allow the dilution to occur , so management believes that adjusting for this benefit provides a meaningful view of net income per share . unless and until our weighted average stock price is greater than $ 89.56 , the initial conversion price , there

