An application layer DDoS attack, also known as a Layer 7 (L7) DDoS attack, targets the application layer of the OSI model. This type of DDoS attack focuses on disrupting specific functions or features of a website or online service. Layer 7 attacks leverage loopholes, vulnerabilities, or business logic flaws in the application layer to orchestrate the attacks. Here are the key characteristics and methods: Examples of L7 attacks are Slowloris, GET/POST Floods, etc.

A recent cyberattack on Lurie Children's Hospital in Chicago has resulted in a significant data breach, exposing the personal information of 791,000 patients. Despite the hospital's refusal to pay a ransom, a vast amount of sensitive medical data is now at risk. Details of the Attack The cybercriminals infiltrated the hospital's systems, causing severe disruptions to its patient portal, communications, and access to medical records.

A widespread ransomware attack has brought thousands of car dealerships across the United States to a halt. The incident, attributed to the BlackSuit ransomware gang, targeted CDK Global, a software provider essential to the operations of numerous car dealerships. This breach underscores the critical need for robust cybersecurity measures such as stolen credentials detection, darknet monitoring services, and digital footprint analysis.

A significant ransomware attack on Infosys McCamish Systems, an outsourcing service provider for financial and insurance companies, has impacted over six million customers. The breach, which took place in late 2023, was only recently disclosed in a filing with the Maine Office of the Attorney General (OAG). This incident underscores the importance of robust cybersecurity measures such as stolen credentials detection, darknet monitoring services, and digital footprint analysis.

In a recent security disclosure, Microsoft has warned more of its clients that Russian hackers have accessed emails exchanged between them and the company. This breach, attributed to the notorious "Midnight Blizzard" hacking group, has raised significant concerns about the security of communications with Microsoft.

‍After unearthing evidence as early as May 2024, cloud computing–company Snowflake released an official statement on June 2, reporting that they were investigating a series of targeted cyber events. A week later, Google's Mandiant, who, alongside Crowdstrike, is aiding Snowflake in this investigation, concluded that clients had been attacked after malicious actors had gotten access to compromised credentials.

What likely started as a quick ransomware “smash and grab” has turned into a headline case resulting in responses from both U.K. and U.S. law enforcement. Earlier this month, several larger London hospitals suddenly had no access to lab results. It turned out to be the result of a ransomware attack on laboratory partner Synnovis that crippled hospitals and health services that rely on Synnovis.

On June 24, 2024, cybersecurity company Sansec published a security advisory detailing how an associated Polyfill domain (cdn.polyfillio) was being used to insert malicious code in scripts served to mobile end users in a web supply chain attack. Polyfill is a popular open-source JavaScript library embedded in more than 100,000 websites to provide polyfills, a small piece of code (usually JavaScript) that helps provide modern functionality on older browsers.

Polyfill.js is a popular open-source project that provides modern functionality on older browsers that do not support it natively; users embed it using the cdn.polyfill.io domain. On February 24, 2024, a Chinese company named Funnull acquired both the domain and the Github account. Following that acquisition, the developer, Andrew Betts, tweeted on his X account a warning for all of his service’s users urging them to remove any reference to polyfill from their code.