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/ ASERT Team

The Anatomy of the DDoS Attack Campaign Targeting Organizations in Ukraine

Overview Beginning on 13 February 2022, multiple governmental, military, and financial organizations within Ukraine reported that their public-facing Web sites, applications, and...

  • Attacks and DDoS Attacks
cyber skull

What Happened in the Second Half of 2021?

Executive Summary The second half of 2021 finally saw much of the world returning to normal, at least until the recent Omicron variant sent us packing back home. The premature...

  • Attacks and DDoS Attacks
bot
/ Roland Dobbins, Steinthor Bjarnason

Mēris & Dvinis Botnets

Threat adversaries leverage exploitable Mikrotik routers with two different botnets, Mēris and Dvinis, to launch high request-per-second attacks against targets.

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
Botnet Image
/ Christopher Conrad

A Tale of Two Botnets

NETSCOUT's ASERT Team tracks Mēris and Dvinis DDoS Botnets. The blog covers the number of botted nodes observed, how they are propagating, and where they are distributed...

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
  • Botnets
phone and computer
/ Roland Dobbins, Steinthor Bjarnason

High-Profile DDoS Extortion Attacks Against SIP/RTP VoIP Providers

Beginning in September 2021, aggressive threat actors have targeted multiple Voice-over-IP (VoIP) communication providers with a campaign of high-impact DDoS extortion attack

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
The Long Tail of Adversary Innovation
/ Carol Hildebrand

The Long Tail of Adversary Innovation

Latest Threat Intelligence Report from NETSCOUT details extensive global impact of cyberattacks on private and public sector organizations.

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
Abusable Internet Censorship Systems
/ Roland Dobbins, Steinthor Bjarnason

HTTP Reflection/Amplification via Abusable Internet Censorship Systems

Learn more about this distributed denial-of-service (DDoS) attack vector which abuses middlebox systems for HTTP reflection/amplification.

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
red wave
/ Carol Hildebrand

Our New DDoS Normal Isn’t All That Normal

Attack frequency has dropped, but we are nowhere near the numbers considered normal prior to COVID-19: Threat actors launched approximately 5.4 million DDoS attacks in the first...

  • Attacks and DDoS Attacks
attacker
/ Roland Dobbins, Steinthor Bjarnason

DHCPDiscover Reflection/Amplification DDoS Attack Mitigation Recommendations

DHCPDiscover, a UDP-based JSON protocol used to manage DVRs, can be abused to launch UDP reflection/amplification attacks when an internet-exposed DVR lacks any form of...

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
  • DDoS Tools and Services
cyber extortion
/ Roland Dobbins, Steinthor Bjarnason

Fancy Lazarus DDoS Extortion Campaign

ASERT Threat Summary Date/Time: 17June2021 1300UTC Severity: Warning Distribution: TLP: WHITE Categories: Availability Contributors: Jon Belanger, Richard Hummel. Executive Summary...

  • Arbor Networks - DDoS Experts
  • Attacks and DDoS Attacks
Session Traversal Utilities for NAT (STUN) Reflection/Amplification
/ Roland Dobbins, Steinthor Bjarnason

Session Traversal Utilities for NAT (STUN) Reflection/Amplification

Adversaries weaponize STUN servers by incorporating the protocol into DDoS-for-Hire services. Approximately 75k abusable STUN servers give DDoS attackers ample opportunity to...

  • Arbor Networks - DDoS Experts
  • DDoS Tools and Services
  • Attacks and DDoS Attacks
Quarterly DDoS Update
/ Carol Hildebrand

The Beat Goes On

The beat goes on: Threat actors launched approximately 2.9 million DDoS attacks in the first quarter of 2021, a 31% increase from the same time in 2020.

  • Attacks and DDoS Attacks