Who is ddosing github

The goal of a DDoS attack is to overwhelm resources to temporarily shut down access to a service. While this can be achieved through a variety of techniques, congesting the network by bombarding it with packets is common practice. ThousandEyes collects multiple data sets across different network layers to cross correlate application performance and user experience to network anomalies.

Prolexic is a subsidiary of Akamai and a popular DDoS mitigation platform. GitHub was quite efficient in mitigating the DDoS attack. Within minutes, the attack was identified and DDoS defense mechanisms kicked in. Given how quickly DDoS mitigation started, it is highly probable that the entire detection and mitigation process was automated which is quite impressive, I must say! While the impact of the attack did not last for more than 15 minutes, GitHub-destined traffic continued to flow through Prolexic scrubbing centers up until 6 hours after the attack.

The two spikes in the BGP path change timeline below Figure 5 represents the various point in time when Prolexic was introduced in the AS-path and subsequently removed. It was the most powerful DDoS attack recorded, with 1. And from the looks of it, it seems to be more severe in its impact. The underlying issue of memached servers lying exposed on the public internet is being tackled by the infrastructure community, with owners of said servers receiving requests to take the exposed servers off the internet, protecting them behind internal networks and firewalls.

Filters that immediately block suspicious levels of memcached traffic are also either developed or in the works from many defence firms. GitHub was the victim of a six-day-long DDoS attack carried out in by Chinese state-sponsored hackers but, since then, botnets and cyberattack methods in general have grown in sophistication. While the attacks were severe, the response from GitHub and Akamai shows that the defences against them are robust. Many people and organisations are now on high alert for what will certainly be a slew of new memcache attacks.

GitHub homepage. Related: infosec , Botnets , Github , security , cyberattacks. Ellen Tannam was a journalist with Silicon Republic, covering all manner of business and tech subjects. The attack originated from over a thousand different autonomous systems ASNs across tens of thousands of unique endpoints.

It was an amplification attack using the memcached-based approach described above that peaked at 1. At UTC our network monitoring system detected an anomaly in the ratio of ingress to egress traffic and notified the on-call engineer and others in our chat system. This graph shows inbound versus outbound throughput over transit links:.

Given the increase in inbound transit bandwidth to over Gbps in one of our facilities, the decision was made to move traffic to Akamai, who could help provide additional edge network capacity. Routes reconverged in the next few minutes and access control lists mitigated the attack at their border.

Monitoring of transit bandwidth levels and load balancer response codes indicated a full recovery at UTC. At UTC routes to internet exchanges were withdrawn as a follow-up to shift an additional 40Gbps away from our edge.

The first portion of the attack peaked at 1. This graph provided by Akamai shows inbound traffic in bits per second that reached their edge:.