Download Security 2020 : reduce security risks this decade by Doug Howard PDF
By Doug Howard
Establish genuine safeguard hazards and pass the hype After years of concentrating on IT safeguard, we discover that hackers are as energetic and potent as ever. This publication offers software builders, networking and defense execs, those who create criteria, and CIOs a simple examine the truth of modern day IT safeguard and a sobering forecast of what to anticipate within the subsequent decade. It debunks the media hype and Read more...
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Example text
Do any of the passengers match terror suspects? Both fi rewalls and IDS/IPS devices were used by most organizations that had systems and networks they needed to protect. Companies felt that as long as they had both a fi rewall and an IDS/IPS, they were safe from hackers. This created a society-wide sense of security that continues to this day. The truth is that, while fi rewalls and IDS/IPS systems are usually necessary for good network and system security, they are only a small part of what a total package needs to include.
Then, in July of 2001, we saw the Code Red worm, which attacked Microsoft’s IIS web servers. On the 19th of that month, 359,000 servers were infected. indd 4 11/15/2010 12:49:38 PM Chapter 1 n What Has History Shown Us? 5 over a year, many IT administrators weren’t as yet taking timely patching seriously. In fact, the vulnerability that Code Red exploited first came to light in June of 1999. Additionally, this attack performed a “buffer overflow,” which manipulates the memory of a system when the developer has not properly restricted utilization.
Encoding is a method of changing elements of the packet in a way that does not change the message on the receiving side but is sufficient to evade an IDS. For example, the Unicode equivalent of a space (when you press the space bar) is “%20”. So all spaces can be replaced with %20 in a message. If the IDS signature is not designed to “normalize” the traffic by replacing all %20s with a space, it may miss the attack. indd 9 11/15/2010 12:49:38 PM 10 Chapter 1 n What Has History Shown Us? While methods such as these are employed by cyber-criminals to carry out direct attacks against specific targets, most hackers have moved to the use of malware for easier, quicker exploitation of systems.