
Cybersecurity firm VulnCheck has found a previously unreported backdoor, named Endlessdoors, in more than 20 Zbtlink router models sold worldwide under the Zbtlink and Wiflyer brands. The routers reportedly contact a specific…
Cybersecurity firm VulnCheck has found a previously unreported backdoor, named Endlessdoors, in more than 20 Zbtlink router models sold worldwide under the Zbtlink and Wiflyer brands. The routers reportedly contact a specific IP address and a China-registered domain every 35 seconds. Whoever controls those domains could access the router and potentially other devices on its network.

VulnCheck estimates at least 100,000 such routers are deployed globally, though their locations and active numbers are unknown. Zbtlink did not respond to requests for comment. Reuters reports that researchers could not establish the backdoor’s purpose or whether it has been exploited. Beijing denies supporting cyberattacks.
Claims that every Chinese-made router is a state-backed spying tool run ahead of the evidence. So does dismissing the finding because no abuse has been confirmed. The technical risk is real if an outsider controls the linked domains, but intent and impact remain unproven. The practical test is whether affected models receive a verified firmware fix and whether monitoring finds unauthorised access.
Sources (2): hindustantimes.com, timesnownews.com
This story was synthesised by AI from the 2 sources linked above.
Updated: this story now draws on 2 sources.