One of the greatest threats to Internet service is Distributed Denial of Service (DDoS) attacks which can paralyze ISPs and disrupt traffic to and from targeted websites. For years now, DDoS attacks have dropped down the IT security priority list as topics such as IP theft took center stage.
Recently however, DDoS attacks targeting organizations of all types have sharply increased. Afflicted organizations had daily operations disrupted and servers compromised, with attacks increasing in sophistication and damage impact. The next waves of attacks will likely be even more complex and damaging.
The DDoS revival reminds us that as threats continue to evolve, organizations must strengthen their security infrastructure and management practices to improve the timeliness and effectiveness of incident response.
By Biren Mehta, Senior Marketing Manager, SP Marketing in Routing and Switching, Cisco
Businesses and governments are bullish on the benefits that cloud computing promises to bring, but security concerns remain a key barrier to entry. Carrier networks provide critical infrastructure and services that governments and businesses depend on to operate every day. Services provided by carriers today are articulated on the mobile endpoint, the customer premise, the network and data center edge, and the public, private, and hybrid clouds. The sum of these is the “carrier cloud.” With cloud enabled service infrastructure, enterprise data and applications must move easily and securely through many clouds. That’s why the network that connects, protects, and moves data fiercely through cloud means more than ever. Read More »
The past few weeks have had many on heightened alert from the initial threats to the ongoing attacks surrounding U.S.-based financial institutions; to say folks have been busy would be quite the understatement.
These events spawned a collaborative effort throughout the Cisco Security Intelligence Operations (Cisco SIO) organization, as depicted in the diagram below.
* Note: As Cisco products have not been found to be vulnerable to these attacks the Cisco PSIRT (Product Security Incident Response Team) provides feedback and peer-review, hence the reason that no Cisco Security Advisory (SA) is present for this activity.
The realm of Network security encompasses many perspectives and interests as is evident from the wealth of articles prevalent across the media and availability of various proactive protection measures. One particular technology recognized as integral to securing a network is the Intrusion Prevention System (IPS), which is used to detect and prevent suspected malicious network traffic or behavior. However, an IPS is not just a ‘set-it-and-forget-it’ type of solution. This is because of the necessity of employing current Cisco IPS signatures, which are the lifeblood of the IPS and are essential for it to identify and block attacks against specific vulnerabilities or certain types of threats. Because new threats and vulnerabilities are constantly being discovered, the IPS signature database for an IPS-capable device needs to be kept current to maximize the level of protection that it can provide. If you already use Cisco IPS technology, then you might already be familiar how crucial it is to use the most current IPS signatures. Otherwise, the IPS solution cannot provide optimal protection against new threats and attacks. Cisco IPS owners with a Cisco IPS Services License understand this fact and can receive signature updates as they become available. Signature updates can be installed manually or downloaded and installed automatically using native Cisco IPS capabilities or management tools such as Cisco Security Manager. For those inclined to write their own signatures, Cisco has published documentation on how to write customer signatures for the IPS.
And while the signatures are the “lifeblood” of the IPS and keeping them current is paramount, it is also important to make sure that the underlying operating system is kept up to date on the sensor as well. The underlying operating system and engines decompose and analyze the traffic as it passes through the device. Things like protocol decoding, features, and evasion resistance are handled here. The engines work but do not alert without the signature set as the signatures provide the matching framework for an alert to fire. The same can be said about the signatures. They do not work without the engines. Each requires the other to function and therefore keeping them both current is important.
Organizations are faced with providing security for employees that are rapidly adopting new technology in their personal and professional lives and expect their work environments and employers to do the same. As the data from the new Cisco 2011 Annual Security Report and the Cisco Connected World Technology Report Chapter 3 show, organizations that do not or cannot provide that type of environment are at risk of losing the ability to compete for those employees and business opportunities. If employers attempt to block, deny, or forbid mobile devices, social networks, instant communications, and new technologies in the work place employees will likely ignore the policies or, even worse, find ways around them that open your environment to unrealized risks.