Bitcoin sportsbook BitBook.biz has been offline for most of the day due to a Distributed Denial of Service attack. BitBook.biz acknowledged the attack on popular Bitcoin discussion forum Bitcointalk.org. SBR users are also discussing the outage in the Players Talk section of the SBR posting Forum. Users are also discussing the downtime at Reddit.

BitBook.biz regarding the DDoS attack: “BitBook has been hit with a large DDoS attack that knocked out parts of our hosting provider’s data center. We are working with our hosting provider on restoring our service.”

Online sportsbooks are often the target of web based attacks. DDoS attacks function by essentially overwhelming a website’s server with many requests. In the past, online sportsbooks have reported receiving ransom notes from alleged attackers. SBR itself was the recipient of a continued DDoS attack in early 2013. Bitcoin sportsbooks must take the necessary steps to secure themselves from the web based attacks.

In other Bitcoin sportsbook news, SBR reported last week that StakeBTC went off-line after stealing a player’s balance. Previous to that report, SBR reported on BTCSportsBet.eu scamming a bettor out of $6700 in January 2014. SBR is in the process of gathering data on Bitcoin sportsbooks and will incorporate the popular cryptocurrency as a filter in the online sportsbooks rating guide.