Posts Tagged ‘Signatures’

Adobe Reader and CRLs

May

2013

There’s something that I wanted to test out for quite some time, but kept postponing until recently. Adobe Reader will ask confirmation before it retrieves a URL when a PDF document contains an action to do so. But what about the Certificate Revocation List in a signed PDF document?When you open a signed PDF document […]

Category Security Written by Didier Stevens 0 Comments

APT1: Q&A on Attacks by the Comment Crew

Feb

2013

Today Mandiant released an detailed report dubbed “APT1” which focuses on a prolific cyber espionage campaign by the Comment Crew going back to at least 2006 and targeting a broad range of industries. The report cites the earliest known public reference about APT1 infrastructure as originating from Symantec. We have detected this threat as Backdoor.Wualess […]

Category General Written by Symantec Security Response Blog 0 Comments

Upswing in Ransomware Activity

Jan

2013

As we predicted toward the end of last year, we are once again seeing an upswing in ransomware activity in 2013. The ransomware extortion scam has been in existence now for a number of years but its popularity among cybercriminals has grown over the last two years and it continues to indiscriminately plague computer users […]

Category General Written by Symantec Security Response Blog 0 Comments

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Posts Tagged ‘Signatures’

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