For someone working in the security area, it's known that many companies have red teams to attack their own system, but this information is never recognized by the company.

Barclays did exactly the opposite and confirmed that it has created a red team to attack the company systems in order to assess their resilience to cyber attacks.

US authorities said Monday a breach of taxpayer records was more extensive than originally estimated, and that some 300,000 accounts appear now to have been affected.

The Internal Revenue Service said it identified some 220,000 taxpayers whose tax records could have been stolen through its online "get transcript" system, which was shut down after news of the breach.

Thomas A. Mars, formerly the chief administrative officer for Walmart in the United States, stepped down. José Luis Rodríguezmacedo Rivera, once the general counsel at Walmart’s Mexican division, quietly left the company. And H. Lee Scott Jr., who was Walmart’s chief executive, will retire from the board this month.

There have been 173 reported data breaches so far in 2010, and 34 of these involve financial services companies. This means that in less than one quarter of the year, we already have seen more than one-third of the 62 banking-related breaches reported in all of 2009.

Was Citibank breached by hackers who siphoned tens of millions of dollars from the bank's customers? The Wall Street Journal on Tuesday reported news of an FBI investigation into an alleged Citibank computer security breach by hackers linked to a Russian cyber gang.