Vulnerability

hi @phenomlab , recently we are getting a lot of DDoS attacks.

We have nginx rate limits and fail2ban set up as security tools…

https://www.nginx.com/blog/rate-limiting-nginx/

Since cloudflare is not working properly with NodeBB due to connection problems, we are looking for other solutions to help with these attacks…

During all these attacks for several hours forum gives “503 excessive load” error page…

For a long time, TikTok has come under constant scrutiny over the amount of data it captures when installed on a mobile phone. Given it is owned by Chinese based parent company ByteDance, and if you also consider the furore around Huawei being part of the critical 5g infrastructure in the UK, then it surely makes sense to err on the side of caution given China’s reputation when it comes to privacy.

However, with in excess of one billion accounts, the platform has become one of the most used in the world, with it’s users more concerned about the frequency of content being uploaded rather than the security controls that that are supposed to offer the owner of such content. The article below from Sky News is an interesting read.

https://news.sky.com/story/delete-tiktok-or-risk-your-data-being-exposed-to-hostile-threats-warns-foreign-affairs-committee-chief-12803857

The argument concerning privacy relating to social media content is by no means new. If you consider Facebook’s somewhat lacklustre and cavalier approach to information security, then it’s easy to understand the concern with TikTok. However, it seems very much that the concerns around information security are being disregarded in the quest for followers, likes, and a constant need to stand out from the crowd by curating content more “appealing” to a wider audience.

But at what cost? Are we really willing to trade our own souls in terms of security in the search for the social media holy grail, and the need to be popular? As a privacy advocate, I will never quite understand the appeal.

A new intelligence gathering campaign linked to the prolific North Korean state-sponsored Lazarus Group leveraged known security flaws in unpatched Zimbra devices to compromise victim systems.

That’s according to Finnish cybersecurity company WithSecure (formerly F-Secure), which codenamed the incident No Pineapple.

Targets of the malicious operation included a healthcare research organization in India, the chemical engineering department of a leading research university, as well as a manufacturer of technology used in the energy, research, defense, and healthcare sectors, suggesting an attempt to breach the supply chain.

Roughly 100GB of data is estimated to have been exported by the hacking crew following the compromise of an unnamed customer, with the digital break-in likely taking place in the third quarter of 2022.

“The threat actor gained access to the network by exploiting a vulnerable Zimbra mail server at the end of August,” WithSecure said in a detailed technical report shared with The Hacker News.

The security flaws used for initial access are CVE-2022-27925 and CVE-2022-37042, both of which could be abused to gain remote code execution on the underlying server.

This step was succeeded by the installation of web shells and the exploitation of local privilege escalation vulnerability in the Zimbra server (i.e., Pwnkit aka CVE-2021-4034), thereby enabling the threat actor to harvest sensitive mailbox data.

Subsequently, in October 2022, the adversary is said to have carried out lateral movement, reconnaissance, and ultimately deployed backdoors such as Dtrack and an updated version of GREASE.

GREASE, which has been attributed as the handiwork of another North Korea-affiliated threat cluster called Kimsuky, comes with capabilities to create new administrator accounts with remote desktop protocol (RDP) privileges while also skirting firewall rules.

Dtrack, on the other hand, has been employed in cyber assaults aimed at a variety of industry verticals, and also in financially motivated attacks involving the use of Maui ransomware.

“At the beginning of November, Cobalt Strike [command-and-control] beacons were detected from an internal server to two threat actor IP addresses,” researchers Sami Ruohonen and Stephen Robinson pointed out, adding the data exfiltration occurred from November 5, 2022, through November 11, 2022.

Also used in the intrusion were tools like Plink and 3Proxy to create a proxy on the victim system, echoing previous findings from Cisco Talos about Lazarus Group’s attacks targeting energy providers.

North Korea-backed hacking groups have had a busy 2022, conducting both espionage-driven and cryptocurrency heists that align with the regime’s strategic priorities.

Most recently, the BlueNoroff cluster, also known by the names APT38, Copernicium, Stardust Chollima, and Copernicium, and Stardust Chollima, and TA444, was connected to wide-ranging credential harvesting attacks aimed at education, financial, government, and healthcare sectors.

– Source