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Overview of IoT threats in 2023

SecureList

IoT devices (routers, cameras, NAS boxes, and smart home components) multiply every year. The first-ever large-scale malware attacks on IoT devices were recorded back in 2008, and their number has only been growing ever since. Telnet, the overwhelmingly popular unencrypted IoT text protocol, is the main target of brute-forcing.

IoT 91
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Microsoft warns of BadAlloc flaws in OT, IoT devices

Security Affairs

Microsoft researchers are warning of major security vulnerabilities affecting OT and IoT devices and high-risks for businesses using them. Researchers from Microsoft’s Section 52 team recently uncovered several critical memory allocation flaws, collectively tracked as BadAlloc , affecting IoT and OT devices. Pierluigi Paganini.

IoT 102
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Sophos blocked attacks exploiting XG Firewall zero-day to deploy Ransomware

Security Affairs

Hackers attempted to exploit a zero-day flaw in the Sophos XG firewall to distribute ransomware to Windows machines, but the attack was blocked. It was designed to download payloads intended to exfiltrate XG Firewall-resident data. Sophos was informed of the attacks exploiting the zero-day issue by one of its customers on April 22.

Firewall 128
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Security Affairs newsletter Round 455 by Pierluigi Paganini – INTERNATIONAL EDITION

Security Affairs

Admin of the BreachForums hacking forum sentenced to 20 years supervised release Russia-linked Midnight Blizzard APT hacked Microsoft corporate emails VF Corp December data breach impacts 35 million customers China-linked APT UNC3886 exploits VMware zero-day since 2021 Ransomware attacks break records in 2023: the number of victims rose by 128% U.S.

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Black Hat insights: Will Axis Security’s ZTNA solution hasten the sunsetting of VPNs, RDP?

The Last Watchdog

Then a global pandemic came along and laid bare just how brittle company VPNs truly are. Criminal hackers recognized the golden opportunity presented by hundreds of millions employees suddenly using a company VPN to work from home and remotely connect to an array of business apps. Two sweeping trends resulted: one bad, one good.

VPN 214
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Multiple DDoS botnets were observed targeting Zyxel devices

Security Affairs

Fortinet FortiGuard Labs researchers warned of multiple DDoS botnets exploiting a vulnerability impacting multiple Zyxel firewalls. through 4.73, VPN series firmware versions 4.60 Zyxel firewalls CVE-2023-28771 (pre-auth remote command OS injection) is being actively exploited to build a Mirai-like botnet. through 5.35.

DDOS 93
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New Mirai variant appears in the threat landscape

Security Affairs

“The IoT realm remains an easily accessible target for attackers. SecurityAffairs – hacking, Mirai). “The attacks are still ongoing at the time of this writing. Experts noticed that the malware also downloads more shell scripts that retrieve brute-forcers that could be used to target devices protected with weak passwords.

Wireless 119