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.
To prepare, I did four things. 1  I read the CEH Certified Ethical Hacker All-in-One Exam Guide by Matt Walker, published in September 2011. The book was a genuine joy to consume. 2  I reviewed the CEH knowledge domains using the Boson ExSim-Max CEH practice exam.