Here's a piece of advice for those running classes training prisoners about information technology.
It's probably not a good idea to let notorious hackers join the course - or, if you do, to keep a very close eye on what they're up to.
Four young Englishmen who went on an Anonymous rampage back in 2010 weren't as anonymous as they might have hoped.
They were traced, identified and arrested...now two of them are on their not-so-anonymous way to prison.
Anonymous is reported to have downed the website of the Massachussets Institute of Technology.
MIT's network is where internet activist Aaron Swartz was charged with leeching millions of academic articles back in 2011. Tragically, Swartz killed himsef last week.
The crook who cracked into the email of numerous celebrities, including Scarlett Johansson and Mila Kunis, has been sent to prison.
Is there anything the rest of us can learn from this?
Find out more...
He meant to promote his anti-DDoS kit by shedding light on poor internet security at the Hong Kong stock exchange, but his two brief DDoS attacks instead wound up costing him his freedom for the better part of a year.
A Seattle hacking triumvirate has received a collective quarter-century behind bars.
With a combination of wardriving and malware implantation, they made off with $3m plundered from company accounts - including straight from the payroll.
Despite the cross-border challenges of prosecuting cybercrime, the cops sometimes do get their man - or men.
We think it's worth reminding you when this happens.
An Australian hacker from the New South Wales country town of Orange has been sent to prison for two-and-a-half years.
David Cecil, who went under the handle 'Evil', was arrested a year ago following a six-month investigation.