Cisco Blogs


Cisco Blog > Security

Cisco SIO Delivering Training at Black Hat DC 2010 – Round 2

A few months back at Black Hat USA 2009 a few members of Cisco Security Intelligence Operations (SIO) delivered our first, of what is expected to be many, training sessions to conference attendees. Well, here we are three months later with Black Hat DC 2010 just around the corner and we (Cisco SIO) are back on the agenda again to deliver our hands-on Detecting & Mitigating Attacks Using Your Network Infrastructure training session. One small change for round 2 though, John Stuppi will be joining us as an instructor for our training session in Arlington, VA. Welcome aboard John -- oh if he only knew what he was getting himself into. ☺

As described in a previous blog post by one of my fellow instructors and esteemed Cisco Security blogger, Tim Sammut, we will be informing and teaching attendees about the built-in features, solutions, and capabilities that exist in devices within your network infrastructure and how to make practical and effective use of the devices to monitor, detect, prevent, and trigger responses to attacks and threats.

Read More »

Internet Safety for Kids and Parents

Cisco is committed to working with the public sector, partners, and customers to ensure cyber security from the workplace to the home. The month of October is National Cyber Security Awareness Month, and as it comes to an end we thought we’d share a short video from Cisco CSO John N. Stewart where he provides tips on Internet safety for kids and parents to protect themselves online.

When it comes to 21st century education, parents and kids have an important role. Recently, Cisco took that message to Piedmont Middle School in San Jose, CA, with the help of the characters from The Realm.

Read More »

Considering the Risks and Rewards of Social Media

Social media continues to pervade cultures around the globe, and the usefulness and popularity of social media sites and services has been demonstrated in some impressive ways. The power and reach of social media outlets has empowered individuals to make their voice heard around the world in an instant, most often unfiltered and unrestrained. The extent of social media’s influence on individuals’ lives has pulled it into organizations, many of which have embraced these new technologies and sought to leverage them for profit.

Still, the application of blogs, videos, real-time status updates, and online collaboration are cause for concern, in no small part because of the concentration of power in the hands of the individual employing them. Organizations continue to struggle with whether to allow employees to participate in these networks, how to enforce policies, and how to adjust to all that the networks have to offer — even for industries that are built in large part around individual identities, like the entertainment studios discussed in this week’s Cyber Risk Report.

Read More »

Common Errors Causing DKIM Verification Failures

Cisco recently upgraded its email infrastructure to use our IronPort email security appliances to apply and verify DomainKeys Identified Mail (DKIM) signatures on outgoing and incoming email. We had previously been using a prototype implementation of DKIM that we had begun early in the process of standardizing DKIM. In the process, they made available to me some information on DKIM signature verification successes and failures. While we had previously published information on DKIM signature verification showing the increasing deployment of DKIM signing, this is the first time that we have had comprehensive information on signatures that fail to verify. The study involved about 14.2 million messages with DKIM signatures, 5.33% of which failed to verify. The messages came from 16,797 different domains, 10,968 (65%) of which had 100% verification rates and 2,899 of which failed consistently.

Read More »

Cloud Computing: Not a Security Panacea

The Microsoft Sidekick data loss was a pretty big story over the last week or two; for a while, Microsoft was predicting a total loss of all data, although by October 15, things seemed to start looking better in that department. Some have already discussed whether this failure should be used to represent cloud computing entirely. (To get it out of the way now — no, it shouldn’t.) But there remains a gap in expectations and some level of assumptions about what cloud computing has to offer.

Read More »