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Oct
05

Get smarter about log data

From: ChannelWeb.co.uk

By Bob Tarzey

Resellers that have been charged with making sure their customers’ use of IT  is secure face an ongoing series of challenges. Importantly, is the security in  place good enough to counter today’s threats and if not, can the customer be  convinced to invest more?

Vendor LogRhythm commissioned some research that we included in one of our  reports, entitled Advanced Cyber-Security Intelligence,  that underlines the scale of the problem resellers face. Only 19 per cent of the  organisations surveyed said security spending was increasing as a proportion of  overall IT spending.

However, threats are multiplying, and they are no longer generic and random  but tailored and targeted. So the approach taken to IT security needs to change as well. In many cases  it will have to be achieved without huge new investment. A starting point is to  review what is in place already and gauge its effectiveness.

Traditionally, IT security has been deployed as a series of point products:  firewalls to keep out intruders, desktop antivirus to protect the end user  environment, spam filters to clean email, web filters to police use of the  internet, and so on.

While all such products have their place, and they can counter old-style  generic security threats, they are often not enough to fight more targeted  threats and attacks.

Figure 1 (left): This chart shows answers to the question: “Do  you proactively analyst the data generated by log management and SIEM products  to identify breaches and conduct post-event forensics?” – Copyright Quocirca  2012

Detecting and mitigating these requires a broader approach. A good  example is the Flame malware first reported and named earlier in 2012. Initial  instances were not known to AV products that relied on signatures, so it had to  be detected in other ways, such as by monitoring for unusual activity.

Flame worked by contacting as many other devices on a network as it could,  then seeking out interesting data that it sent back to a command-and-control server. A server accessing a wide range of other  devices on a given network and sending reports back to a suspicious IP address  can be detected by monitoring both firewall and server activity logs in real  time and recognising unusual behaviour.

That is what we mean by advanced cybersecurity intelligence. Many  organisations already have the base technology for this type of detection, but  may not be actually benefiting.

Early iterations of such products were for log management: the collecting and  archiving of log data for long-term compliance reporting. These evolved to  become what is termed security information and event management (SIEM),  involving the collection of a broader range of data.

Next-generation SIEM (another term for advanced cybersecurity intelligence)  comprises souped-up versions of such tools that can use the data in real time to  protect against targeted threats.

Figure 2 (left): Responses to the question: “Has  the percentage of IT budget spent on security gone up in the past five years?” – Copyright Quocirca 2012

We have found that organisations are optimistic — perhaps too optimistic — about their ability to protect themselves by having the right technology in  place.

They must also recognise that the “right technology” is changing. This is not  to say that point security should be ditched, but that individual products’ effectiveness should certainly be reviewed and rationalised – which should in  turn free up some funds.

Current investment can be reviewed and more advanced capabilities  recommended. LogRhythm, our report sponsor, is one such provider, as is IBM (via  Q1 Labs), McAfee (via NitroSecurity), HP (via ArcSight), and Symantec, as well  as specialist IT intelligence vendors such as Splunk. Resellers need an  understanding of next-generation SIEM, the products and their capabilities.

Bob Tarzey is director and analyst at Quocirca

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