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DDoS Attacks Accelerate Amid the COVID-19 Pandemic, Reports Show
Since the start of the global COVID-19 pandemic, reports show that distributed denial of service (DDoS) attacks have accelerated.
A report from NETSCOUT Arbor showed that DDoS attack count and bandwidth have all seen significant increases since the start of the global COVID-19 pandemic. From March 11th to April 11th of 2020, NETSCOUT reported that it observed more than 864,000 DDoS attacks – the single largest number of DDoS attacks that the organization had seen over any other 31-day period to date.
The number of DDoS attacks during the March 11th to April 11th of 2020, NETSCOUT Arbor said surpassed that of the DDoS count during the December 2019 holiday period which peaked at 751,000. From November 11th of 2019 to March 11th of 2020, NETSCOUT Arbor reported that it observed an average of 735,000 DDoS attacks per month.
According to NETSCOUT Arbor, while terabit-class DDoS attacks make the headlines, the most significant DDoS-related metric goes to the sheer amount of bandwidth (bps) and throughput (pps) consumed by DDoS attacks. From March 11th to April 11th of 2020, NETSCOUT Arbor reported that it observed a whopping 1.01 pbps and 208 gpps of aggregate DDoS attack traffic. This aggregate DDoS attack traffic, NETSCOUT Arbor said represents a 14% increase in attack bps and a 31% increase in attack pps.
Imperva’s March 2020 Cyber Threat Index Report, meanwhile, revealed that for the month of March 2020, DDoS attacks on financial, food and beverage industries across multiple countries spiked amid the COVID-19 pandemic. According to Imperva, websites in the food & beverage industry experienced more attacks, with 6% increase in DDoS attacks.
DDoS attacks in the food & beverage industry in Germany, Imperva reported, spiked by 125%. Earlier, on March 19, 2020, Takeaway.com, one of the leading online food delivery marketplace that connects consumers and restaurants in several European countries, including Germany reported that one of its websites was under DDoS. Jitse Groen, Founder and CEO of Takeaway.com revealed via Twitter that the DDoS attacker or attackers demanded 2 bitcoins (valued nearly USD 14,000 at the time of the demand) for the DDoS attack to stop. The attackers also threatened to launch a DDoS attack on the company’s other website.
Imperva added that it also observed an increased volume of DDoS attacks on the financial industry globally, with 3% increase. DDoS attacks in the financial industry in Italy (+44%), UK (+21%) and Spain (+18%) were notably larger, Imperva said.
“With attacks on the rise in the food and beverage and financial services industries, companies need to employ effective security strategies to balance the new load of traffic to their websites and mitigate new risks,” Nadav Avital, head of security research at Imperva, said.
Biggest DDoS Attack Ever Recorded
On February 28, 2020, GitHub – a website that allows software developers to store and manage their software code – was unavailable from 17:21 to 17:26 UTC and intermittently unavailable from 17:26 to 17:30 UTC due to a DDoS attack.
According to GitHub, the DDoS attack originated from over a thousand different autonomous systems (ASNs) across tens of thousands of unique endpoints. The DDoS attack peaked at 1.35Tbps via 126.9 million packets per second, GitHub said.
GitHub added that the DDoS attackers specifically used the memcached-based approach. Cloudflare describes memcached DDoS this way: “A memcached distributed denial-of-service (DDoS) attack is a type of cyber-attack in which an attacker attempts to overload a targeted victim with internet traffic. The attacker spoofs requests to a vulnerable UDP memcached server, which then floods a targeted victim with internet traffic, potentially overwhelming the victim’s resources. While the target’s internet infrastructure is overloaded, new requests cannot be processed and regular traffic is unable to access the internet resource, resulting in denial-of-service.”
DDoS Protection Amid the COVID-19 Pandemic
COVID-19 was declared by the World Health Organization (WHO) as a pandemic on March 11, 2020. Since then, quarantine sites in many parts of the world were ordered, giving the global community a new normal: staying at home. As people are mandated to stay at home, online communication has become a lifeline for many people to work, shop and study online.
With the rise of internet traffic, organizations can mistakenly believe that all traffic comes from legitimate sources. Not all internet traffic, however, come legitimate sources as an increase in internet traffic could be a sign of a DDoS attack.
Signs of a DDoS attack resemble that of a typical legitimate internet traffic, including unusually slow in opening a file or accessing a website; unavailability of a website; or inability to access a website. DDoS campaigns can last from minutes to hours, while others can go on for months and even for years.
It’s important to be able to distinguish between a legitimate traffic from a DDoS attack. At the outset, malicious traffic can be detected and identified via firewall or intrusion detection system. Signs of malicious network traffic include traffic from an unusual geographical location or suspicious IP addresses.
It’s also important to note that DDoS attacks could simply be a simple diversionary tactic used by attackers to hide their main intention of conducting other malicious activities in your organization’s network.
Speak with our experts today to mitigate the DDoS risks. Protect you most valuable assets and keep cybercriminals at bay.
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Steve E. Driz, I.S.P., ITCP