![]() Below the fold, brief details.Īmong the LOCKSS system's defenses against abuse are two relevant to DDOS prevention, rate limits and effort balancing. I don't know why it took me so long to figure it out, but reading Goodin's post I suddenly realized that techniques we described in Impeding attrition attacks in p2p systems, a 2004 follow-up to our award-winning 2003 SOSP paper on the architecture of the LOCKSS system, can be applied to preventing systems from being abused by DDOS-ers. ![]() With an amplification factor of 85.9 to 1, 10 gigabytes-per-second of requests directed at an RDP server will deliver roughly 860Gbps to the target. The technique works by bouncing a relatively small amount of data at the amplifying service, which in turn reflects a much larger amount of data at the final target. The amplification allows attackers with only modest resources to strengthen the size of the data they direct at targets. ![]() So-called booter/stresser services, which for a fee will bombard Internet addresses with enough data to take them offline, have recently embraced RDP as a means to amplify their attacks, security firm Netscout said. The security firm believes that the rise in the Bitcoin-to-USD price has led to some groups returning to or re-prioritizing DDoS extortion schemes.Īnd Dan Goodin reports on the latest technique the DDOS-ers are using in DDoSers are abusing Microsoft RDP to make attacks more powerful:Īs is typical with many authenticated systems, RDP responds to login requests with a much longer sequence of bits that establish a connection between the two parties. ![]() In a security alert sent to its customers and shared with ZDNet this week, Radware said that during the last week of 2020 and the first week of 2021, its customers received a new wave of DDoS extortion emails.Įxtortionists threatened companies with crippling DDoS attacks unless they got paid between 5 and 10 bitcoins ($150,000 to $300,000) Catalin Cimpanu reports on yet another crime wave using Bitcoin in As Bitcoin price surges, DDoS extortion gangs return in force: ![]()
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