Tag: DNS reflection
The Mozi botnet has been documented as able to conduct HTTP, TCP, UDP, and other attacks. More information can be found in the April 2024 Sensor Intel Series article. [back to top] And Another Step Back: Emerging DDoS Attack Vectors HTTP/2 Abuse The relatively new HTTP/2 protocol (new in internet terms, since the protocol is…
Read MoreOne wrinkle in the wide-load trucks-on-the-freeway analogy is that at a certain size, UDP packets are too large to transmit without being broken up. So, while the attacker is successful in significantly amplifying the DNS responses, when the packets reach a certain size, they will get fragmented into smaller ones. Either way, the net result…
Read MoreAccounting for the slight dip in 2019, password login attacks account for 32% of all reported SIRT incidents over the past three years. We also saw how they jumped in 2020, so we did a deeper dive into how these kinds of cyberattacks ramped up during the pandemic. Credential Stuffing Attacks at Financial Services Organizations…
Read MoreThe Largest DDoS Attack of 2021 So Far The largest attack the SOC team encountered over the past 15 months came in February 2021 and targeted a technology company that provides information security services for gaming and gambling organizations. The onslaught peaked at 500 Gbps, or half a terabit per second. Threat actors, possibly disgruntled…
Read MoreA wide variety of organizations fall under financial services, including banks of varying sizes, credit unions, insurance companies, government-sponsored financial institutions, stock exchanges, investment funds, payment processors, consumer finance lenders, brokerages, and companies that service the financial sector. We’ll look at all of these and note the differences in the data, starting with the largest…
Read MoreCyberattack Incidents at Financial Services Companies Like payment processors, financial services companies are private companies that serve the financial sector by providing data processing for banks, credit unions, and other financial institutions. They can perform loan analyses, credit ratings, check printing, data storage, or analytics. Basically, they provide any outsourced service except payment processing (the…
Read MoreThe sector with the largest single attack in 2021, however, was ISP/Hosting, which saw attacks peak at 1.4 Tbps. Where DDoS Attacks Come From Denial-of-service attacks are most frequently launched from compromised servers or consumer devices, such as Internet-of-Thing (IoT) products and broadband routers. In producing this report, we made use of data not only…
Read MoreAugust Port Scan Data F5 Labs also analyzes data for TCP ports other than 80 and 443 from the Efflux network. The top 10 ports for August 2022 follow patterns we’ve been seeing for years, with port 5900 (VNC) topping the list, followed by a collection of ports used mainly for remote access (ssh, telnet,…
Read MoreThe two peaks appeared to be caused by the attackers targeting the company’s domain name, rather than a specific IP address. The customer uses a round robin DNS system with two IP addresses, each with a 90-second TTL (time-to-live). As the attackers’ DNS resolutions shifted with the round robin, for a brief period both IP…
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As we have done for prior DDoS Attack Trends reports, we recently analyzed attack data from the F5 Distributed Cloud DDoS Mitigation service to get a look at the DDoS traffic they handled for their customers in 2022. We continued our analysis by comparing 2022 data to that of 2021 and 2020. Some interesting trends…
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