security

2 min read

Update 2013-11-12: Watch our youtube discussion Update 2013-11-05: Upon further examination of the traffic we can confirm that a large percentage is destined for TCP port 445. This is indicative of someone looking for nodes running SMB/DCERPC. With that in mind it is extremely likely someone is looking for vulnerable windows machines or it is quite possible that […]

7 min read

CSIRT, I have a project for you. We have a big network and we’re definitely getting hacked constantly. Your group needs to develop and implement security monitoring to get our malware and hacking problem under control.   If you’ve been a security engineer for more than a few years, no doubt you’ve received a directive […]

1 min read

Is it the end of October already? As has been true for centuries, there is a tradition for children to wear costumes and disguise themselves while going door to door with a simple question: “Trick or treat?” While I am not sure there is a coincidence, but having National Cyber Security Awareness Month (NCSAM) end […]

4 min read

On October 22, 2013, Cisco TRAC Threat Researcher Martin Lee wrote about Distributed Denial of Service (DDoS) attacks that leverage the Domain Name System (DNS) application protocol. As Martin stated, the wide availability of DNS open resolvers combined with attackers’ ability to falsify the source of User Datagram Protocol (UDP) packets creates a persistent threat […]

1 min read

Many organizations make the error of thinking that basic defensive software is sufficient to protect critical data and infrastructure. When in reality, in order for government and enterprise organizations to keep their data protected from increasingly advanced cyber threats, comprehensive defensive security approaches are critical. And even with advanced, comprehensive solutions, there are still risks. […]

3 min read

DNS is like the town gossip of the network infrastructure. Computers and apps ask DNS questions and you can ask DNS who has been asking to resolve malware domains. When internal trusted systems are using DNS to resolve the names of known malware sites, this can be an Indicator of Compromise and a warning to […]

4 min read

Dude, where’s my IP? I love to check in on social networks like Foursquare and Google+. Most of the time, there’s no point to it, but it’s fun to see what friends and colleagues are up to or discover new local haunts. Despite the fun and games, location is much more important to the network […]

2 min read

Cryptography is critical to secure, trustworthy communications. Recent questions within the tech industry have created entirely new discussions about the cryptography underpinning our communications infrastructure. While some in the media have focused on the algorithm chosen for Deterministic Random Bit Generation (DRBG), we’ve seen many more look to have a broader crypto conversation. With this […]

4 min read

Now when I’m talking about safekeeping a mobile device, I’m not saying don’t use your Kindle by the pool or let your toddler play on the iPad while eating ice cream. These are dangerous things to be doing with a gadget, but today I want to focus more on the data within that device, rather […]