From Malware To Malevolent People

So in virus protection on the computer, there are 2 common ways antivirus software works:

1) Signature Detection – There are known patterns of viruses and the antivirus software looks for a match against one of these. 

2) Behavior Detection – There are known patterns of normal behavior on the computer, and the antivirus software looks for deviations from this. 

Each has certain weaknesses:

– With signature detection, if there is a zero-day exploit (i.e. a virus that is new and therefore which has no known signature) then it will not be caught by a blacklist of known viruses.

– While with behavior detection, some viruses that are designed to look like normal network or application behavior will not be caught by heuristic/algorithm-based detection methods. 

For defense-in-depth then, we can see why employing a combination of both methods would work best to protect from malware. 

It’s interesting that these same techniques for recognizing bad computer actors can be used for identifying bad or dangerous people. 

We can look for known signatures/patterns of evil, abusive, and violent behaviors and identify those people according to their bad actions.

Similarly, we generally know what “normal” looks like (within a range of standard deviations, of course) and people who behave outside those bounds could be considered as potentially dangerous to themselves or others. 

Yes, we can’t jump to conclusions with people — we don’t want to misjudge anyone or be overly harsh with them, but at the same time, we are human beings and we have a survival instinct. 

So whether we’re dealing with malware or malevolent individuals, looking at patterns of bad actors and significant deviations from the normal are helpful in protecting your data and your person. 😉

(Source Photo: Andy Blumenthal)

Safely Detonate That Malware

I like the potential of the FireEye Malware Protection System (MPS).

Unlike traditional signature-based malware protections like antivirus, firewalls, and intrusion prevention systems (IPS), FireEye is an additional security layer that uses a dynamic Multi-Vector Virtual Execution (MVX) engine to detonate even zero-day attacks from suspicious files, web pages, and email attachments.

According to Bloomberg Businessweek, Target’s implementation of FireEye detected the malware attack on Nov 30, 2013 and it alerted security officials, but allegedly “Target stood by as as 40 million credit card numbers–and 70 million addresses, phone numbers, and other pieces of personal information–gushed out of its mainframes”over two weeks!

In fact, FireEye could’ve been set to “automatically delete [the] malware as it’s detected” without human intervention, but “Target’s team apparently “turned that function off.”

FireEye works by “creating a parallel computer network on virtual machines,” and before data reaches its endpoint, they pass through FireEye’s technology. Here they are “fooled into thinking they’re in real computers,” and the files can be scanned, and attacks spotted in safe “detonation chambers.”

Target may have been way off target in the way they bungled their security breach, but using FireEye properly, it is good to know that attacks like this potentially can be thwarted in the future. 😉

[Note: this is not an endorsement of any product or vendor]