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Operation SkyCloak Deploys Tor-Enabled OpenSSH Backdoor Targeting Defense Sectors

Threat actors are leveraging weaponized attachments distributed via phishing emails to deliver malware likely targeting the defense sector in Russia and Belarus. According to multiple reports from Cyble and Seqrite Labs, the campaign is designed to deploy a persistent backdoor on compromised hosts that uses OpenSSH in conjunction with a customized Tor hidden service that employs obfs4 for

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#mac#windows#google#git#backdoor#samba#pdf#auth#ssh#The Hacker News
⚡ Weekly Recap: Lazarus Hits Web3, Intel/AMD TEEs Cracked, Dark Web Leak Tool & More

Cyberattacks are getting smarter and harder to stop. This week, hackers used sneaky tools, tricked trusted systems, and quickly took advantage of new security problems—some just hours after being found. No system was fully safe. From spying and fake job scams to strong ransomware and tricky phishing, the attacks came from all sides. Even encrypted backups and secure areas were put to the test.

CVE-2025-21944: ksmbd: fix bug on trap in smb2_lock

**Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?** One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

A New Security Layer for macOS Takes Aim at Admin Errors Before Hackers Do

A design firm is editing a new campaign video on a MacBook Pro. The creative director opens a collaboration app that quietly requests microphone and camera permissions. MacOS is supposed to flag that, but in this case, the checks are loose. The app gets access anyway. On another Mac in the same office, file sharing is enabled through an old protocol called SMB version one. It’s fast and

CVE-2025-40103: smb: client: Fix refcount leak for cifs_sb_tlink

**Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?** One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

CVE-2025-40052: smb: client: fix crypto buffers in non-linear memory

**Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?** One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

GHSA-q8j9-34qf-7vq7: Silver has unrestricted traffic between Wireguard clients

### Summary Sliver's custom Wireguard netstack doesn't limit traffic between Wireguard clients, this could lead to: 1. Leaked/recovered keypair (from a beacon) being used to attack operators. 2. Port forwardings usable from other implants. ### Details 1. Sliver treat operators' Wireguard config and beacon/session's Wireguard config equally, they both connect to the wireguard listener created from the CLI. 2. The current netstack implementation does not filter traffic between clients. I think this piece of code handle traffic between clients, from experimental results clients can ping and connect to each other freely, and I didn't see any filtering here either: ``` File: server\c2\wireguard.go 246: func socketWGWriteEnvelope(connection net.Conn, envelope *sliverpb.Envelope) error { 247: data, err := proto.Marshal(envelope) 248: if err != nil { 249: wgLog.Errorf("Envelope marshaling error: %v", err) 250: return err 251: } 252: dataLengthBuf := new(bytes.Buffer) 253: binary.W...

GHSA-45p5-v273-3qqr: Vert.x-Web vulnerable to Stored Cross-site Scripting in directory listings via file names

# Description - In the `StaticHandlerImpl#sendDirectoryListing(...)` method under the `text/html` branch, file and directory names are directly embedded into the `href`, `title`, and link text without proper HTML escaping. - As a result, in environments where an attacker can control file names, injecting HTML/JavaScript is possible. Simply accessing the directory listing page will trigger an XSS. - Affected Code: - File: `vertx-web/src/main/java/io/vertx/ext/web/handler/impl/StaticHandlerImpl.java` - Lines: - 709–713: `normalizedDir` is constructed without escaping - 714–731: `<li><a ...>` elements insert file names directly into attributes and body without escaping - 744: parent directory name construction - 746–751: `{directory}`, `{parent}`, and `{files}` are inserted into the HTML template without escaping # Reproduction Steps 1. Prerequisites: - Directory listing is enabled using `StaticHandler` (e.g., `StaticHandler.create("p...

Five New Exploited Bugs Land in CISA's Catalog — Oracle and Microsoft Among Targets

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added five security flaws to its Known Exploited Vulnerabilities (KEV) Catalog, officially confirming a recently disclosed vulnerability impacting Oracle E-Business Suite (EBS) has been weaponized in real-world attacks. The security defect in question is CVE-2025-61884 (CVSS score: 7.5), which has been described as a

⚡ Weekly Recap: F5 Breached, Linux Rootkits, Pixnapping Attack, EtherHiding & More

It’s easy to think your defenses are solid — until you realize attackers have been inside them the whole time. The latest incidents show that long-term, silent breaches are becoming the norm. The best defense now isn’t just patching fast, but watching smarter and staying alert for what you don’t expect. Here’s a quick look at this week’s top threats, new tactics, and security stories shaping