Chinese RedZei Group Batters Victims With Incessant Vishing Effort

The cybercriminals switch up carriers and SIM cards regularly, making it difficult for either mobile users or telecom companies to block the barrage of malicious calls and voicemails.

Chinese threat actors have been targeting Chinese-speaking students in the United Kingdom with a unique phone scam that aims to steal their personal information with repeated phone calls and voicemails that are hard for victims or carriers to block.
A group dubbed RedZei — or RedThief — calls victims once or twice a month from a unique UK-based phone number, leaving an unusual automated voicemail message if the receiver does not answer, revealed cybersecurity researcher Will Thomas
in a blog post
published just before the new year.
I got the recorded voicemails and identified that they are almost certainly scam calls from Chinese-speaking fraudsters targeting Chinese international students at universities in the UK, he wrote in his post.
Thomas, who goes by
BushidoToken
on Twitter, said hes been tracking the campaign for more than a year, and has created a profile for the threat actors based on the calls and voicemails. RedZei chooses its targets carefully, seeming to know that these foreign students would be a rich victim group that is ripe for exploitation, he wrote in the post.
Whats more, once a victim is a target of the scam — which employs social engineering tactics to get students to give up personal information — its difficult to block future attempts to compromise victims, Thomas said. Thats because for each wave of scam calls, RedZei mainly uses a new pay-as-you-go UK-based phone number from one of the main mobile network operators, he explained.
This essentially renders blocking the scammers phone numbers ineffective, Thomas wrote.

Last News
▸ Some DLP Products Vulnerable to Security Holes ◂ Discovered: 23/12/2024 Category: security	▸ Scan suggests Heartbleed patches may not have been successful. ◂ Discovered: 23/12/2024 Category: security	▸ IoT Devices on Average Have 25 Vulnerabilities ◂ Discovered: 23/12/2024 Category: security

**Cyber Security Categories**
Google Dorks Database	Exploits Vulnerability	Exploit Shellcodes

CVE List

Tools/Apps

News/Aarticles

Phishing Database

Deepfake Detection

Trends/Statistics & Live Infos

Tags:
Chinese RedZei Group Batters Victims With Incessant Vishing Effort