QNAP warns of ransomware targeting internet-facing NAS products
The manufacturer has provided a guide to securing vulnerable products amid ongoing attacks


QNAP customers have been advised that cyber attackers are targeting its network-attached storage (NAS) products with ransomware and have been encouraged to secure their devices at the earliest opportunity.
Ransomware and brute-force cyber attacks have been "widely targeting" QNAP's internet-facing NAS products, according to the manufacturer which published a products security statement on Friday.
Best NAS drives 2023: Which network storage appliance is right for you? 12 wonderful uses for a NAS Can you put an SSD in a NAS?
NAS drives that are exposed to the internet without any protection are particularly vulnerable to the attacks and users are advised to revisit their security settings to ensure devices are adequately protected.
The scale of attacks is currently unclear and QNAP also didn't specify what strain of ransomware the attackers are using, or where the attackers are based. IT Pro has contacted QNAP for additional comment.
To check if a NAS drive is vulnerable to the attacks QNAP has observed, users should open the QNAP Security Counselor on their NAS products. The NAS is at high risk if there is an artefact that reads: 'The System Administration service can be directly accessible from an external IP address via the following protocols: HTTP' on the dashboard. QNAP also has a guide for users on how to check which ports on a router are exposed to the internet.
Securing the NAS
The first step to fully protect vulnerable products from the ongoing attacks is to disable the port forwarding function of the router. This can be completed via the management interface of a user's router. Users should check their settings and disable the port forwarding setting of NAS management service port which is set at port 8080 and 433 by default.
Users should finally disable the universal plug and play (UPnP) function of their QNAP NAS product in the QTS menu in myQNAPcloud. To do this, users can navigate to the 'Auto Route Configuration' tab in the QTS menu and unselect 'Enable UPnP Port forwarding'.
Get the ITPro daily newsletter
Sign up today and you will receive a free copy of our Future Focus 2025 report - the leading guidance on AI, cybersecurity and other IT challenges as per 700+ senior executives

Connor Jones has been at the forefront of global cyber security news coverage for the past few years, breaking developments on major stories such as LockBit’s ransomware attack on Royal Mail International, and many others. He has also made sporadic appearances on the ITPro Podcast discussing topics from home desk setups all the way to hacking systems using prosthetic limbs. He has a master’s degree in Magazine Journalism from the University of Sheffield, and has previously written for the likes of Red Bull Esports and UNILAD tech during his career that started in 2015.
-
Marc Benioff’s agentic AI gambit is paying dividends
Analysis Agentforce is dominating the agenda at Salesforce – and it appears to be working
-
Enterprises are worried about agentic AI security risks – Gartner says the answer is just adding more AI agents
News Not content with deploying agents for frontline operations, some enterprises might double down with ‘guardian agents’ to monitor their bot-based workforces
-
‘I take pleasure in thinking I can rid society of at least some of them’: A cyber vigilante is dumping information on notorious ransomware criminals – and security experts say police will be keeping close tabs
News An anonymous whistleblower has released large amounts of data allegedly linked to the ransomware gangs
-
It's been a bad week for ransomware operators
News A host of ransomware strains have been neutralized, servers seized, and key players indicted
-
Everything we know about the Peter Green Chilled cyber attack
News A ransomware attack on the chilled food distributor highlights the supply chain risks within the retail sector
-
Scattered Spider: Who are the alleged hackers behind the M&S cyber attack?
News The Scattered Spider group has been highly active in recent years
-
Ransomware attacks are rising — but quiet payouts could mean there's more than actually reported
News Ransomware attacks continue to climb, but they may be even higher than official figures show as companies choose to quietly pay to make such incidents go away.
-
Cleo attack victim list grows as Hertz confirms customer data stolen – and security experts say it won't be the last
News Hertz has confirmed it suffered a data breach as a result of the Cleo zero-day vulnerability in late 2024, with the car rental giant warning that customer data was stolen.
-
‘Phishing kits are a force multiplier': Cheap cyber crime kits can be bought on the dark web for less than $25 – and experts warn it’s lowering the barrier of entry for amateur hackers
News Research from NordVPN shows phishing kits are now widely available on the dark web and via messaging apps like Telegram, and are often selling for less than $25.
-
Healthcare systems are rife with exploits — and ransomware gangs have noticed
News Nearly nine-in-ten healthcare organizations have medical devices that are vulnerable to exploits, and ransomware groups are taking notice.