Large Attacks Hide More Subtle Threats In DDoS Data

An interesting article from Dark Reading in there Security Monitoring section :

The massive avalanche of data in March that crashed down on Spamhaus, the maintainer of a number of spam blacklists, made headlines as the largest distributed denial-of-service (DDoS) attack witnessed to date.

Along with the ongoing campaign against financial institutions by a group of attackers calling themselves the Cyber Fighters of Izz ad-din Al Qassam, the attacks drove the bandwidth of the average DDoS to nearly 50 Gbps during the first quarter of 2013, a sevenfold increase over the past three months of 2012, according to a quarterly report by DDoS mitigation firm Prolexic.

Yet those large attacks are not the most significant denial-of-service (DoS) threat for most companies, according to DDoS mitigation experts.

“The big gigabit, the big DNS reflection attacks — those get all the press, but the ones that are devastating are the ones that knock the application down,” says Vann Abernethy, senior product manager for NSFOCUS, a Beijing-based DDoS-mitigation and network-security firm.

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