Tag Archives: copyright

How to securely deploy medical devices within a healthcare facility

The risks insecure medical devices pose to patient safety are no longer just theoretical, and compromised electronic health records may haunt patients forever. A surgical robot, pacemaker, or other life critical device being rendered non-functional would give a whole new, and wholly undesirable, meaning to denial of service. Malware like MEDJACK has been used to infect medical devices and use them as staging grounds to attack medical records systems. IoT ransomware is on the rise … More ?

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How to securely deploy medical devices within a healthcare facility

Locky ransomware makes a comeback, courtesy of Necurs botnet

The Necurs botnet has, once again, begun pushing Locky ransomware on unsuspecting victims. The botnet, which flip-flops from sending penny stock pump-and-dump emails to booby-trapped files that lead to malware (usually Locky or Dridex), has been spotted slinging thousand upon thousand of emails in the last three or four days. “Talos has seen in excess of 35K emails in the last several hours associated with this newest wave of Locky,” Cisco Talos researchers noted on … More ?

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Locky ransomware makes a comeback, courtesy of Necurs botnet

Alleged Kelihos botmaster indicted

36-year-old Pyotr Levashov was charged on Friday in the US with one count of causing intentional damage to a protected computer, one count of conspiracy, one count of accessing protected computers in furtherance of fraud, one count of wire fraud, one count of threatening to damage a protected computer, two counts of fraud in connection with email and one count of aggravated identity theft. Levashov stands accused of controlling and operating the Kelihos botnet to, … More ?

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Alleged Kelihos botmaster indicted

CLDAP reflection attacks generate up to 24 Gbps of traffic

Akamai researchers Jose Arteaga and Wilber Majia have identified a new Connection-less Lightweight Directory Access Protocol (CLDAP) reflection and amplification method. CLDAP query packet Akamai’s Security Intelligence Response Team (SIRT) has observed this attack vector producing DDoS attacks consistently exceeding 1 Gbps, comparable to DNS reflection attacks. CLDAP Unlike other reflection-based vectors, where compromised hosts may number in the millions, the observed CLDAP amplification factor has been able to produce significant attack bandwidth with significantly … More ?

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CLDAP reflection attacks generate up to 24 Gbps of traffic

IoT devices under attack: Amnesia hijacks, BrickerBot destroys

Every hour of every day, computer systems and IoT devices are under attack by bots trying to recruit them into growing botnets. Security researchers have recently highlighted two of these threats coming after Linux- and BusyBox-based systems and devices. Amnesia A year after security researcher Rotem Kerner discovered a remote code execution vulnerability that affected digital video recorders (DVRs) manufactured by Chinese company TVT Digital and sold by more than 70 different vendors around the … More ?

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IoT devices under attack: Amnesia hijacks, BrickerBot destroys

20,000-bots-strong Sathurbot botnet grows by compromising WordPress sites

A 20,000-bots-strong botnet is probing WordPress sites, trying to compromise them and spread a backdoor downloader Trojan called Sathurbot as far and as wide as possible. Sathurbot: A versatile threat “Sathurbot can update itself and download and start other executables. We have seen variations of Boaxxe, Kovter and Fleercivet, but that is not necessarily an exhaustive list,” the researchers noted. Sathurbot is also a web crawler, and searches for domain names that can be probed … More ?

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20,000-bots-strong Sathurbot botnet grows by compromising WordPress sites

How the Necurs botnet influences the stock market

After a three-months-long partial hiatus, the Necurs botnet is back to flinging spam emails left and right. But unlike before the break, when it was mostly delivering the infamous Locky ransomware or the Dridex banking Trojan, the botnet is now engaged in distributing emails with no malicious attachment or link. According to Cisco Talost researchers, the botnet has been spotted firing off short-lasting but sizeable bursts of penny stock pump-and-dump emails. Necurs botnet’s latest campaign … More ?

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How the Necurs botnet influences the stock market

The power of Big Data for security, operations and DDoS protection

DDoS atacks are costly to your reputation and your bottom line. In this podcast recorded at RSA Conference 2017, Avi Freedman, CEO at Kentik, discusses how to recognize attacks quickly and accurately, then shut them down with situation-appropriate mitigation. Here’s a transcript of the podcast for your convenience. I’m Avi Freedman, CEO of a startup called Kentik Technologies, I’m here today, on this podcast, to talk about the power of Big Data for security, operations, … More ?

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The power of Big Data for security, operations and DDoS protection

Advanced Windows botnet spreads Mirai malware

Kaspersky Lab experts are analyzing the first Windows-based spreader for the Mirai malware as part of a concerted effort to close down Mirai botnets in the wild. The Windows bot appears to have been created by a developer with more advanced skills than the attackers who unleashed the massive Mirai-powered DDoS attacks in late 2016, a fact that has worrying implications for the future use and targets of Mirai-based attacks. The malware author is likely … More ?

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Advanced Windows botnet spreads Mirai malware

DDoS attacks increasingly form blended attacks of more vulnerabilities

DDoS attacks increasingly formed blended attacks of four or more vulnerabilities over the course of the fourth quarter of 2016, with an intent to overload targeted monitoring, detection and logging systems, according to Nexusguard. Hybrid attacks were a common attack pattern against financial and government institutions. DDoS botnet activity: Top attacking countries The supersized Mirai attack from Q3 set the stage for Q4 challenges, resulting in a ripple of botnets from connected devices and the … More ?

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DDoS attacks increasingly form blended attacks of more vulnerabilities