Israeli security company Blue Security’s websites have been bombarded by denial-of-service (DoS) attacks for a number of days from spammers, angry over a recent anti-spam tool the company has brought to market, VNUnet.com reports.The article states that the Blue Frog tool, available to members of Blue Security’s “Do Not Intrude” registry, traces and floods senders of unwanted e-mail with opt-out messages, a technique that is likened to fighting fire with fire.Since the tool has been in use, members of the registry have received threatening e-mails from the spamming community warning them to quit the service, VNUnet.com reports. Shortly thereafter, a large-scale distributed DoS attack was started.Blue Security said that it was being flooded with up to 10 million packets a second at some points during the attack. For more on spam, read The Spammographer.Keep checking in at our Security Feed page, or subscribe via RSS, for updated news coverage. By Paul Kerstein Related content news Multibillion-dollar cybersecurity training market fails to fix the supply-demand imbalance Despite money pouring into programs around the world, training organizations have not managed to ensure employment for professionals, while entry-level professionals are finding it hard to land a job By Samira Sarraf Oct 02, 2023 6 mins CSO and CISO CSO and CISO CSO and CISO news Royal family’s website suffers Russia-linked cyberattack Pro-Russian hacker group KillNet took responsibility for the attack days after King Charles condemned the invasion of Ukraine. By Michael Hill Oct 02, 2023 2 mins DDoS Cyberattacks feature 10 things you should know about navigating the dark web A lot can be found in the shadows of the internet from sensitive stolen data to attack tools for sale, the dark web is a trove of risks for enterprises. Here are a few things to know and navigate safely. By Rosalyn Page Oct 02, 2023 13 mins Cybercrime Security news ShadowSyndicate Cybercrime gang has used 7 ransomware families over the past year Researchers from Group-IB believe it's likely the group is an independent affiliate working for multiple ransomware-as-a-service operations By Lucian Constantin Oct 02, 2023 4 mins Hacker Groups Ransomware Cybercrime Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe