Hackers broke into offices at LinkedIn and Twitter for the second time in the past week, according to reports.
A new piece of evidence shows that the hackers breached LinkedIn and the social networking giant’s office buildings in two separate incidents.
A LinkedIn spokesperson told The Washington Post that LinkedIn had been hacked and that an investigation is ongoing.
Twitter told The Associated Press that hackers had breached the Twitter corporate offices in both London and New York.
The breach at LinkedIn comes amid an increasing trend of companies breaking into the office buildings of other companies to steal documents and data.
In October, the Guardian reported that the hacking group Anonymous claimed to have broken into the LinkedIn offices of the company, stealing documents and photos.
Twitter is also believed to have been targeted.
Twitter said it was working with law enforcement to investigate.
Twitter did not immediately respond to a request for comment.
In a statement, LinkedIn said:We are aware of this incident and have taken steps to ensure the safety of our users and our users’ data.
We take security extremely seriously and we have taken the appropriate measures to protect our users data and data stored in our data centers.
The LinkedIn breach was discovered late last week, with the hacker group attributing the attack to an employee who used the name “Duke” and the handle “Dude4u.”
The group has claimed responsibility for numerous attacks, including an attack on LinkedIn in February that resulted in the LinkedIn name being blacked out for an hour.