RSS ze světa hackingu


New Ransomware Variants Flourish Amid Law Enforcement Actions

Ransomware groups continue to evolve their tactics and techniques to deploy file-encrypting malware on compromised systems, notwithstanding law enforcement's disruptive actions against the cybercrime gangs to prevent them from victimizing additional companies. "Be it due to law enforcement, infighting amongst groups or people abandoning variants altogether, the RaaS [ransomware-as-a-service]…

Datum: 24. 12. 2021

New BLISTER Malware Using Code Signing Certificates to Evade Detection

Cybersecurity researchers have disclosed details of an evasive malware campaign that makes use of valid code signing certificates to sneak past security defenses and stay under the radar with the goal of deploying Cobalt Strike and BitRAT payloads on compromised systems. The binary, a loader, has been dubbed "Blister" by researchers from Elastic Security, with the malware samples having …

Datum: 24. 12. 2021

CISA, FBI and NSA Publish Joint Advisory and Scanner for Log4j Vulnerabilities

Cybersecurity agencies from Australia, Canada, New Zealand, the U.S., and the U.K. on Wednesday released a joint advisory in response to widespread exploitation of multiple vulnerabilities in Apache's Log4j software library by nefarious adversaries. "These vulnerabilities, especially Log4Shell, are severe," the intelligence agencies said in the new guidance. "Sophisticated cyber threat actors…

Datum: 23. 12. 2021

IoT SAFE — An Innovative Way to Secure IoT

By the end of 2021, there will be 12 billion connected IoT devices, and by 2025, that number will rise to 27 billion. All these devices will be connected to the internet and will send useful data that will make industries, medicine, and cars more intelligent and more efficient. However, will all these devices be safe? It's worth asking what you can do to prevent (or at least reduce) becoming a…

Datum: 23. 12. 2021

4-Year-Old Bug in Azure App Service Exposed Hundreds of Source Code Repositories

A security flaw has been unearthed in Microsoft's Azure App Service that resulted in the exposure of source code of customer applications written in Java, Node, PHP, Python, and Ruby for at least four years since September 2017. The vulnerability, codenamed "NotLegit," was reported to the tech giant by Wiz researchers on October 7, 2021, following which mitigations have been undertaken to fix…

Datum: 23. 12. 2021

Researchers Disclose Unpatched Vulnerabilities in Microsoft Teams Software

Microsoft said it won't be fixing or is pushing patches to a later date for three of the four security flaws uncovered in its Teams business communication platform earlier this March. The disclosure comes from Berlin-based cybersecurity firm Positive Security, which found that the implementation of the link preview feature was susceptible to a number of issues that could "allow accessing…

Datum: 23. 12. 2021

China Suspends Deal With Alibaba For Not Sharing Log4j 0-Day First with the Government

China's internet regulator, the Ministry of Industry and Information Technology (MIIT), has suspended a partnership with Alibaba Cloud, the cloud computing subsidiary of e-commerce giant Alibaba Group, for six months for failing to promptly report a critical security vulnerability affecting the broadly used Log4j logging library. The development was reported by Reuters and South China Morning…

Datum: 22. 12. 2021

New Exploit Lets Malware Attackers Bypass Patch for Critical Microsoft MSHTML Flaw

A short-lived phishing campaign has been observed taking advantage of a novel exploit that bypassed a patch put in place by Microsoft to fix a remote code execution vulnerability affecting the MSHTML component with the goal of delivering Formbook malware. "The attachments represent an escalation of the attacker's abuse of the CVE-2021-40444 bug and demonstrate that even a patch can't always…

Datum: 22. 12. 2021

Active Directory Bugs Could Let hackers Take Over Windows Domain Controllers

Microsoft is urging customers to patch two security vulnerabilities in Active Directory domain controllers that it addressed in November following the availability of a proof-of-concept (PoC) tool on December 12. The two vulnerabilities — tracked as CVE-2021-42278 and CVE-2021-42287 — have a severity rating of 7.5 out of a maximum of 10 and concern a privilege escalation flaw affecting the…

Datum: 22. 12. 2021

Tropic Trooper Cyber Espionage Hackers Targeting Transportation Sector

Transportation industry and government agencies related to the sector are the victims of an ongoing campaign since July 2020 by a sophisticated and well-equipped cyberespionage group in what appears to be yet another uptick in malicious activities that are "just the tip of the iceberg." "The group tried to access some internal documents (such as flight schedules and documents for financial plans…

Datum: 21. 12. 2021

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