Sometimes it can be a daunting task to keep up with computer security best practices, especially when it comes to prevention. There is an almost unlimited amount of things to take into account, not to mention significant decisions on which risks you need to address and which aren’t worth the effort. In addition, many different people have many different ideas about what’s important when it comes to baseline mitigation. This may explain why there are so many sources on the topic, often with different core focuses in mind. For example, Cisco’s Network Security Baseline is geared towards networking configuration, while the PCI-DSS regulations are focused on the technology surrounding credit /debit cards. The truth is that no one set of general rules will ever be ideal for all scenarios; in most cases, the best-fitting strategy would be a custom solution.
However, even an imperfect solution can be useful. This week I came across this list of 35 general mitigation strategies suggested by the Australian DSD (they’re sorta like the NSA). Many of these paint with a wide brush (patch all the things!), but some are directed at specific applications of technology and software. The approach is very proactive in targeting the most widely used components of modern attack vectors. On their website, DSD makes the claim that implementing the top 4 suggested strategies would have prevented 85% of the incidents they responded to in 2010. A bold claim (assisted by wide scopes):
- Update and patch Adobe products, Microsoft products, and Java.
- Update and patch your OS
- Be stingy with administrator/superuser access
- Whitelist your programs
I’m sure that taking these steps can eliminate much of the low hanging fruit, and doing all 35 would probably eliminate even more. But even if all 35 are not ideal for every scenario, it’s still all-around decent computer security advice. These strategies can be a great reference source when fleshing out a custom security policy for mitigating attacks. The rest of the list can be found here (pdf).