Pretty often there is a discussion how far it is allowed to hack back. I was just reading an interesting post called Hackers Could Become The Hacked? which I wanted to share with you
About the author
Roger Halbheer is an Executive Security Advisor at Microsoft in EMEA acting as a trusted advisor to CxO. Before that he was a Managing Director at Accenture's Financial Services. Before joining Accenture, he was the Chief Security Officer of Swisscom (Switzerland's largest telecom provider) and the global Chief Security Advisor for Microsoft.