In the second half of 2011, the maximum attack power repelled by Kaspersky DDoS Prevention went up 20% compared to the first half of the year. The longest DDoS attack lasted for 80 days, 19 hours, 13 minutes and 5 seconds, and targeted a travel website. The largest number of DDoS attacks 384 in number targeted a cybercriminal portal. The most recent wave of attacks occurred during the Christmas and New Year holidays, most targeted sites offering beach resort apartments for rent.”]
Source: https://securelist.com/ddos-attacks-in-h2-2011/36535/