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Denial of Service vulnerability discovered in Triconex TriStation Software Suite Emulator

Applied Risk ICS Security Consultant Tom Westenberg discovered a DoS vulnerability in an emulated version of the Triconex TriStation Software Suite. Triconex is a Schneider Electric brand which supplies systems and products in regards to critical control and industrial safety-shutdown technology. The Triconex Emulator is software that allows users to emulate and execute TriStation 1131 applications without connecting to a Tricon, Trident, or Tri-GP controller. Using the Emulator, users can test applications in an offline … More ? The post Denial of Service vulnerability discovered in Triconex TriStation Software Suite Emulator appeared first on Help Net Security .

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Denial of Service vulnerability discovered in Triconex TriStation Software Suite Emulator

Attackers continue to enhance their performance, apply smart business techniques

During the second half of 2018, attackers bulked up existing tactics, rapidly evolvied new performance enhancements, and applied smart business techniques to vastly accelerate attack growth rate, according to the latest Threat Landscape Report by Netscout. IoT’s countdown to attack Constant targets of DDoS malware, IoT devices come under attack within five minutes of being plugged in and targeted by specific exploits within 24 hours. IoT security is minimal to nonexistent on many devices, making … More ? The post Attackers continue to enhance their performance, apply smart business techniques appeared first on Help Net Security .

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Attackers continue to enhance their performance, apply smart business techniques

Modern browser APIs can be abused for hijacking device resources

Powerful capabilities of modern browser APIs could be misused by attackers to take control of a site visitor’s browser, add it to their botnet, and use it for a variety of malicious actions, researchers from the Foundation for Research and Technology – Hellas and Stony Brook University are warning. To prove their point, they’ve created MarioNet, a prototype framework that allows them to do just that. The hijacked resources could be used for unwanted and … More ? The post Modern browser APIs can be abused for hijacking device resources appeared first on Help Net Security .

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Modern browser APIs can be abused for hijacking device resources

CISO’s guide to an effective post-incident board report

A successful cyberattack is undoubtedly one of the most disruptive events an organization can experience. Whether it’s phishing, DDoS, ransomware or SQL injection, the incident often results in major service failures and potentially massive revenue loss, as well as damage to brand reputation and customer trust. As CISO, you are charged not just with overseeing the response and mitigation processes post-breach but also with assembling all relevant information in a post-incident report to the board. … More ? The post CISO’s guide to an effective post-incident board report appeared first on Help Net Security .

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CISO’s guide to an effective post-incident board report

Week in review: Man in the Cloud attacks, Google GDPR fine, business resilience

Here’s an overview of some of last week’s most interesting news and articles: Bug in widespread Wi-Fi chipset firmware can lead to zero-click code execution A vulnerability in the firmware of a Wi-Fi chipset that is widely used in laptops, streaming, gaming and a variety of “smart” devices can be exploited to compromise them without user interaction. Researchers analyze DDoS attacks as coordinated gang activities In a new report, NSFOCUS introduced the IP Chain-Gang concept, … More ? The post Week in review: Man in the Cloud attacks, Google GDPR fine, business resilience appeared first on Help Net Security .

Vulnerable cloud infrastructure experiencing increasing attacks

Attackers are increasingly targeting vulnerable cloud infrastructure to exploit it for covert cryptojacking or to deliver ransomware, Securonix researchers warn. Some attacks are fairly trivial, but others are multi-vector/multi-platform threats where multiple functionalities are combined as part of the same malicious threat (e.g., XBash, which combines cryptomining, ransomware and botnet/worm activity). The way in The attacks are automated and probe the infrastructure and cloud services for vulnerabilities and/or weak or default login credentials. Among the … More ? The post Vulnerable cloud infrastructure experiencing increasing attacks appeared first on Help Net Security .

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Vulnerable cloud infrastructure experiencing increasing attacks

SSDP amplification attacks rose 639%

The Nexusguard Q3 2018 Threat Report has revealed the emergence of an extremely stealthy DDoS attack pattern targeting communications service providers (CSPs). Comparison between normal attack traffic and attack traffic with legitimate traffic This new vector exploits the large attack surface of ASN-level (autonomous system number) CSPs by spreading tiny attack traffic across hundreds of IP addresses to evade detection. The ongoing evolution of DDoS methods suggests that CSPs need to enhance their network security … More ? The post SSDP amplification attacks rose 639% appeared first on Help Net Security .

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SSDP amplification attacks rose 639%

Cisco fixes serious DoS flaws in its email security appliances

Cisco has plugged a heap of security holes in many of its products, including two vulnerabilities (one critical) that open its email security appliances to denial of service attacks. About the vulnerabilities Both vulnerabilities affect the Cisco AsyncOS Software for Cisco Email Security Appliances, and can be exploited remotely by unauthenticated attackers. CVE-2018-15453 can be exploited by sending a malicious S/MIME-signed email through a targeted device. “If Decryption and Verification or Public Key Harvesting is … More ? The post Cisco fixes serious DoS flaws in its email security appliances appeared first on Help Net Security .

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Cisco fixes serious DoS flaws in its email security appliances

Old and new OpenSSH backdoors threaten Linux servers

OpenSSH, a suite of networking software that allows secure communications over an unsecured network, is the most common tool for system administrators to manage rented Linux servers. And given that over one-third of public-facing internet servers run Linux, it shouldn’t come as a surprise that threat actors would exploit OpenSSH’s popularity to gain control of them. How severe is the threat? Nearly five years ago, ESET researchers helped to disrupt a 25 thousand-strong botnet of … More ? The post Old and new OpenSSH backdoors threaten Linux servers appeared first on Help Net Security .

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Old and new OpenSSH backdoors threaten Linux servers

Why you shouldn’t be worried about UPnP port masking

Last May, security firm Imperva wrote a blog post discussing a new proof of concept for bypassing DDoS mitigation after discovering reflected network protocols appearing on non-standard network ports. Imperva was able to replicate the same behavior using a technique called UPnP Port Masking, which uses the Universal Plug and Play (UPnP) Protocol to alter the source port of commonly abused network protocols in DDoS attacks. Multiple news outlets picked up on Imperva’s research and … More ? The post Why you shouldn’t be worried about UPnP port masking appeared first on Help Net Security .

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Why you shouldn’t be worried about UPnP port masking