Security Experts:

Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Cloud Security

Cloudflare Customer Targeted in Record HTTPS DDoS Attack

Security and web performance services provider Cloudflare recently mitigated the largest HTTPS distributed denial-of-service (DDoS) attack it has seen to date.

Security and web performance services provider Cloudflare recently mitigated the largest HTTPS distributed denial-of-service (DDoS) attack it has seen to date.

Peaking at 15.3 million request-per-second (RPS), this was not the largest application-layer DDoS attack ever recorded, but Cloudflare says it was the largest to be carried out over HTTPS.

In August 2021, Cloudflare announced it had mitigated a 17.2 million RPS DDoS attack. Shortly after, the company said it observed the Mēris botnet launching a 21.8 million RPS attack.

The new assault, observed by Cloudflare earlier this month, stands out because HTTPS DDoS attacks require significantly higher computational resources due to the costs associated with establishing a secure TLS encrypted connection.

“Therefore it costs the attacker more to launch the attack, and for the victim to mitigate it. We’ve seen very large attacks in the past over (unencrypted) HTTP, but this attack stands out because of the resources it required at its scale,” Cloudflare notes.

The assault targeted an organization operating a crypto launchpad, lasted roughly 15 seconds, and was launched by using a botnet of roughly 6,000 unique bots located in 112 countries. The largest amount of attack traffic came from Indonesia (15%).

“What’s interesting is that the attack mostly came from data centers. We’re seeing a big move from residential network Internet Service Providers (ISPs) to cloud compute ISPs,” Cloudflare says.

The security services provider says it identified over 1,300 different networks that the attack traffic originated from, with top networks including Hetzner from Germany (Autonomous System Number 24940), Azteca Comunicaciones Colombia (ASN 262186), and OVH in France (ASN 16276).

Related: Abcbot DDoS Botnet Linked to Older Cryptojacking Campaign

Related: New ‘Enemybot’ DDoS Botnet Targets Routers, Web Servers

Related: Microsoft Saw Record-Breaking DDoS Attacks Exceeding 3 Tbps

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Expert Insights

Related Content

Application Security

Cycode, a startup that provides solutions for protecting software source code, emerged from stealth mode on Tuesday with $4.6 million in seed funding.

Cybercrime

Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.

Cybercrime

The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

Cybercrime

Artificial intelligence is competing in another endeavor once limited to humans — creating propaganda and disinformation.

Cybercrime

Video games developer Riot Games says source code was stolen from its development environment in a ransomware attack

Cybercrime

A new study by McAfee and the Center for Strategic and International Studies (CSIS) named a staggering figure as the true annual cost of...

Cybercrime

A digital ad fraud scheme dubbed "VastFlux" spoofed over 1,700 apps and peaked at 12 billion ad requests per day before being shut down.