Can you read an encrypted PDF?
Credit to Author: Nikolay Pankov| Date: Fri, 28 Feb 2020 21:49:42 +0000
Researcher Fabian Ising, speaking at the Chaos Communication Congress, showed the limits of PDF encryption’s strength.
Read moreCan you trust digital signatures in PDF files?
Credit to Author: Nikolay Pankov| Date: Tue, 14 Jan 2020 12:31:34 +0000
Researchers try to modify the contents of a signed PDF file without invalidating the signature.
Read moreA new Equation Editor exploit goes commercial, as maldoc attacks using it spike
Credit to Author: Gabor Szappanos| Date: Thu, 18 Jul 2019 16:00:18 +0000
Weaponized RTF documents adopt CVE-2018-0798, another Equation Editor vulnerability<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/ltjXsAajVFc” height=”1″ width=”1″ alt=””/>
Read moreGandCrab 101: All about the most widely distributed ransomware of the moment
Credit to Author: Luca Nagy| Date: Tue, 05 Mar 2019 14:00:10 +0000
In this Sophos101 report, we’ll give you the lowdown on what you need to know about this, unfortunately, widely disseminated malware.<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/QbQ2o1iJn68″ height=”1″ width=”1″ alt=””/>
Read moreEmotet 101, stage 5: a delivery vehicle for more malware
Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:59:17 +0000
By SophosLabs Research Emotet is a botnet in its own right, one so prolific and dominant that the United States CERT, the body tasked with tracking cyberthreats to the country, named Emotet in July, 2018 “among the most costly and destructive malware” to affect governments, enterprises and organizations large and small, and individual computer users. […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/A9JdHdI4I94″ height=”1″ width=”1″ alt=””/>
Read moreEmotet 101, stage 4: command and control
Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:58:33 +0000
By SophosLabs Research The Emotet family could not do what it does without receiving a constant stream of instructions from its owners, or in the absence of the detailed level of feedback about its operating environment each bot sends home from an infected host machine. It also uses huge numbers of compromised websites that belong […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/tuvtIYBP4JI” height=”1″ width=”1″ alt=””/>
Read moreEmotet 101, stage 3: The Emotet executable
Credit to Author: hajnalkakope| Date: Tue, 05 Mar 2019 13:57:54 +0000
By SophosLabs Research Emotet’s arrival is usually preceded by a deceptive spam email, which has a malicious attachment. Opening the attachment starts a process which can lead to an Emotet infection. The Emotet application is an evolved binary, in the sense that it has gone through thousands of iterations over its existence. Its presence as […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/CfniXxu0bac” height=”1″ width=”1″ alt=””/>
Read moreEmotet 101, stage 2: The malicious attachment and killchain
Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:56:43 +0000
By SophosLabs Research The Emotet malware family is in a constant state of evolution and change. From day to day or week to week, the malware’s creators and distributors take an active role in changing up the killchain – the sequence of events that begins with a victim receiving a malicious file attachment, and ends […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/C8Iq5Z7cCTc” height=”1″ width=”1″ alt=””/>
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