iPhone jailbreaker turned Apple intern, Nicholas Allegra has lost his job at Apple after simply forgetting to reply to an email from the Cupertino, California-based company.

Allegra, who is better known by his online handle, Comex, tweeted "As of last week, after about a year, I'm no longer associated with Apple."

"As for why? Because I forgot to reply to an email."

Comex told Forbes that the email he forgot to reply to was an offer to extend his employment as a remote intern, but after not getting back to Apple promptly, the company withdrew the offer and Comex found himself without a job.

Comex made a name for himself by creating one of the first web-based services that would automatically jailbreak an iPhone, iPad, or iPod Touch, simply by visiting a specially crafted website. Jailbreaking such devices requires finding a vulnerability that, once exploited, escapes the iOS sandbox and allows unlimited access to the underlying operating system. Before Comex's tool, this task could be cumbersome to achieve.

However, not only did Comex turn the vulnerability into a way to jailbreak the devices, he also provided a patch to close the vulnerability and secure devices against malicious users.

Apple appeared to take note of Comex's talent, offering him a position as an intern at the company in August last year, much to the disappointment of the jailbreaking community, some of whom saw the jump to the other side as an act of treason.

Comex still appears to be taking flak for his past decision, even though he now no longer works for Apple, tweeting that "anyone who thinks I 'sold out' for money, doesn't know what he's talking about."