As 2011 draws to a close we wanted to take a look at computer and information security in the twelve months that have passed.

What will probably stick in most people’s minds is the Sony PlayStation Network and Qriocity hack, which resulted in an outage lasting 23 days. In other developments, hacktivist groups like Anonymous and LulzSec took to social media to further their causes, and mobile malware got more attention than ever before.

All in all, there’s no doubt that 2011 was a very busy year for IT security professionals.

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URL shortening services have been around for a long time (TinyURL started back in 2002) but it wasn’t until Twitter started gaining momentum that they became widely popular. Now we have a TON of them, including the original TinyURL, Bit.ly, Is.gd, and many, many more.

We have all placed an enormous amount of trust in these services by using them to such a large extent. They offer a legitimate, highly useful service, but we should at least be aware of the flip side of the coin.

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Last week the BitTorrent site Mininova was hit by a large-scale DDoS attack that caused a total of 14 hours of downtime. Regardless of what you think about torrent sites, this was an interesting example of how a website can be incapacitated by a DDoS attack.

We chose this example to illustrate the effect of a DDoS attack because Mininova shared some relevant information about the attack, especially a very telling traffic graph from their Internet connection. This coupled with some Pingdom monitoring data gave us a chance to look closely at the effects of a DDoS attack.

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You may remember the incident that Google had on January 31, when it during 55 minutes accidentally flagged all URL:s containing “/” as a potential malware site. This meant that every single site on the Internet was marked as harmful, including Google.com.

This is a look at some interesting side effects of that incident.

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A DDoS attack on the DNS servers of the domain registrar Network Solutions slowed down access to hundreds of thousands of websites during several hours last Friday (January 23).

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We have gathered 10 of the most noteworthy incidents on the Internet in 2008. This was another eventful year, full of its share of accidents and incidents that disrupted the Internet and the WWW. We have included problems ranging from website outages and service issues to large-scale network interruptions. You are sure to recognize several of them.

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Sometimes disagreements and conflicts spill over from real life to online, and sometimes people go completely overboard and launch cyber attacks on services or websites they dislike, doing their best to sabotage them and often causing some serious downtime.

This sabotage is often done using distributed denial-of-service attacks (DDoS attacks) which send such extreme amounts of traffic to a website that it is effectively disabled.

This article takes a look at some high-profile examples of cyber attacks, how the attacked website was affected and why it was attacked (where this information is available). We also take a quick look at how these attacks are usually launched, what the long arm of the law is doing about it and how bad the punishment can actually get.

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This is the second week of our new, weekly recurring post about noteworthy incidents on the Internet. This includes for example general network issues, ISP problems and downtime for well-known websites. It may be things that have been detected by us here at Pingdom, or written about by others.

We are not going to be able to cover everything that happens out there, so if we omit anything that you feel is important, please feel free to add this information in the comments, preferably with a link to a source (such as a news article or service status page with relevant information).

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The BBC website was subjected to a DDoS attack on Thursday evening (November 6) that crippled the website’s performance significantly.

During the attack, the BBC website responded very slowly, and our monitoring shows that for a total of 1 hour and 15 minutes it did not respond at all. The downtime was spread over multiple short intervals, lasting just a few minutes each time.

The attack lasted the entire evening. It started to have an effect after 5 p.m. CET and the performance was not back to normal until after 10 p.m. CET.

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Today we are starting a new, weekly recurring post that we hope you will find useful. The purpose of this weekly post is, as the title implies, to sum up some of the more noteworthy problems that have occurred on the Internet during the past week. This includes for example general network issues, ISP problems and downtime for well-known websites. It may be things that have been detected by us here at Pingdom, or written about by others.

We are not going to be able to cover everything that happens out there, so if we omit anything that you feel is important, please feel free to add this information in the comments, preferably with a link to a source (such as a news article or service status page with relevant information).

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