Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Perimeter

6/3/2009
02:45 PM
John H. Sawyer
John H. Sawyer
Commentary
50%
50%

Security Incident Ratings Made Easy

Management likes numbers. They get the the warm fuzzies when numbers can be graphed in a way that they can quickly discern what's going on. Of course, if the numbers are bad, then they may not feel those warm fuzzies. In the IT security world, we try to provide useful numbers to show what a great job we're doing, but it's hard to quantify thwarted attacks -- other than relying on numbers from an IPS and anti-malware system.

Management likes numbers. They get the the warm fuzzies when numbers can be graphed in a way that they can quickly discern what's going on. Of course, if the numbers are bad, then they may not feel those warm fuzzies. In the IT security world, we try to provide useful numbers to show what a great job we're doing, but it's hard to quantify thwarted attacks -- other than relying on numbers from an IPS and anti-malware system.Rating systems for attacks and vulnerabilities have been around for a while, but most are crude, risk-based matrices that rate security incidents with high, medium, and low ratings for probability on one axis, and impact on the other. Otherwise, I haven't seen anything that rates incidents well until a recent post from Richard Bejtlich on the TaoSecurity blog.

I'm not going to rehash his rating scheme, but what I do want to bring attention to are two factors: the granularity of the 10-point scale and moving it into the high/medium/low categorization, and the use of vulnerability as a type of incident.

A couple of readers commented that having 10 levels was too granular, but I disagree. If you need to break ratings down to a high, medium, or low classification, then Richard offers the option of viewing 1-3 as low, 4-6 as medium, 7-9 as high, and 10 as game over. The granularity is good for better reporting later on. I personally like graphs that have a smaller scale and more points to graph than ones that are more jagged. I think it helps to pinpoint more subtle changes in the data over time.

Richard said his reasoning for including vulnerabilities as an incident type is that some of his businesses classify them as such, even though it goes against how traditional incident detectors and responders think. I have mixed feelings on this one. The incident responder in me wants to agree and say that vulnerabilities shouldn't be included, but the security pro in me who wears many hats says it should. Why?

For security teams who are small and do incident response, vulnerability scanning, and penetration testing, detecting vulnerabilities and dealing with incidents tends to blur. If their experience is like mine, you have one ticketing system to manage it all, so it's often easy to simply and have an incident type of vulnerability. In fact, sometimes the detection of the vulnerability leads to a determination that a true incident has occurred already as a result of the vulnerability.

For teams who already have a mature incident rating system, this may seem old hat, but for those of you who don't, it may be just what you're looking for. And, remember, you don't have to use it verbatim. You can mix it up and use it as you please so that it best fits your organization.

John H. Sawyer is a senior security engineer on the IT Security Team at the University of Florida. The views and opinions expressed in this blog are his own and do not represent the views and opinions of the UF IT Security Team or the University of Florida. When John's not fighting flaming, malware-infested machines or performing autopsies on blitzed boxes, he can usually be found hanging with his family, bouncing a baby on one knee and balancing a laptop on the other. Special to Dark Reading.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
News
FluBot Malware's Rapid Spread May Soon Hit US Phones
Kelly Sheridan, Staff Editor, Dark Reading,  4/28/2021
Slideshows
7 Modern-Day Cybersecurity Realities
Steve Zurier, Contributing Writer,  4/30/2021
Commentary
How to Secure Employees' Home Wi-Fi Networks
Bert Kashyap, CEO and Co-Founder at SecureW2,  4/28/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-24259
PUBLISHED: 2021-05-05
The “Elementor Addon Elements� WordPress Plugin before 1.11.2 has several widgets that are vulnerable to stored Cross-Site Scripting (XSS) by lower-privileged users such as contributors, all via a similar method.
CVE-2021-24260
PUBLISHED: 2021-05-05
The “Livemesh Addons for Elementor� WordPress Plugin before 6.8 has several widgets that are vulnerable to stored Cross-Site Scripting (XSS) by lower-privileged users such as contributors, all via a similar method.
CVE-2021-24261
PUBLISHED: 2021-05-05
The “HT Mega – Absolute Addons for Elementor Page Builder� WordPress Plugin before 1.5.7 has several widgets that are vulnerable to stored Cross-Site Scripting (XSS) by ...
CVE-2021-24262
PUBLISHED: 2021-05-05
The “WooLentor – WooCommerce Elementor Addons + Builder� WordPress Plugin before 1.8.6 has a widget that is vulnerable to stored Cross-Site Scripting (XSS) by lower-priv...
CVE-2021-24263
PUBLISHED: 2021-05-05
The “Elementor Addons – PowerPack Addons for Elementor� WordPress Plugin before 2.3.2 for WordPress has several widgets that are vulnerable to stored Cross-Site Scriptin...