The ten-year limitations period is not absolute. It can be extended if you voluntarily agree to do so. Back in the bad old dates (before 1998), the IRS used to put enormous pressure on taxpayers to agree to extend the limitations period beyond ten years--such extensions often lasted for ten or even twenty years.
Certified Ethical Hacker. Certified Ethical Hacker (CEH) is a qualification obtained by assessing the security of computer systems, using penetration testing techniques. The code for the CEH exam is 312-50, and the certification is in Version 9 as of 2016.
1 Take a professional course. There are a wide variety of courses available for IT security professionals in Ethical Hackingâ or âInternet Securityâ which would help you to expand your knowledge in ethical hacking.  8. Do the experiments on your own to know the actual happening of a situation.