#privacy + #security

Public notes from activescott tagged with both #privacy and #security

Saturday, April 25, 2026

The findings expose how suspected commercial surveillance vendors (CSVs) exploit the global telecom interconnect ecosystem, leverage private operator networks, and conduct covert location tracking operations that can persist undetected for years.

SIM Card Exploitation: One campaign sent a malicious SMS containing hidden SIM card commands to extract location information, attempting to turn the device into a covert tracking beacon.

Our findings highlight a systemic issue at the core of global telecommunications: operator infrastructure designed to enable seamless international connectivity is being leveraged to support covert surveillance operations that are difficult to monitor, attribute, and regulate. Despite repeated public reporting, this activity continues unabated and without consequence.

These vulnerabilities are not the result of software bugs or network misconfigurations; rather, they are inherent to global telecommunications design and business practices. The mobile ecosystem comprises over a thousand operators interconnected through roaming agreements and signalling protocols that prioritize efficiency, service availability, and revenue opportunity over security. As a result, a shadowy marketplace of state-backed and commercial espionage actors has emerged, developing and deploying software platforms that weaponize telecommunication networks for global surveillance.

he root of the security problem lies in the foundational signalling protocols themselves. Designed for a trusted community of mobile operators and legitimate third-party service providers, SS7 protocols lack the basic security mechanisms of IP networks, such as authentication and validation to verify the source of signalling messages, integrity checks to ensure that data has not been altered, and encryption to protect its contents.

While most commercial threat groups focus on device implants, there is strong demand by government agencies for “off-the-shelf” telecom surveillance services that use mobile networks to locate and track users, and intercept communications without hacking a target’s phone. These services are often brokered through intermediaries with direct or brokered access to mobile operator or provider networks, allowing surveillance traffic to blend into legitimate roaming operations.

Friday, April 10, 2026

If you use Signal, you actually have an advantage here, now that you know about this vulnerability. Signal has a setting that blocks the content of messages from appearing in their notifications. That way, even if someone accesses your alerts, all they'll see is you received a Signal message—not who sent it or what it contains.

To turn it on, open Signal, tap your profile in the top-left corner, then hit "Settings." Under Notification Content, choose "No Name or Content" to block all data to the alert. You can compromise here and choose "Name Only" if you want to know who a message is from before you open it—just remember, an intruder may also see you received a message from that person if they scrape your iPhone's notifications.

Sunday, April 5, 2026

Microsoft is running one of the largest corporate espionage operations in modern history.

Every time any of LinkedIn’s one billion users visits linkedin.com, hidden code searches their computer for installed software, collects the results, and transmits them to LinkedIn’s servers and to third-party companies including an American-Israeli cybersecurity firm.

The user is never asked. Never told. LinkedIn’s privacy policy does not mention it.

Because LinkedIn knows each user’s real name, employer, and job title, it is not searching anonymous visitors. It is searching identified people at identified companies. Millions of companies. Every day. All over the world. This is illegal and potentially a criminal offense in every jurisdiction we have examined.

LinkedIn loads an invisible tracking element from HUMAN Security (formerly PerimeterX), an American-Israeli cybersecurity firm, zero pixels wide, hidden off-screen, that sets cookies on your browser without your knowledge. A separate fingerprinting script runs from LinkedIn’s own servers. A third script from Google executes silently on every page load. All of it encrypted. None of it disclosed.

Every time you open LinkedIn in a Chrome-based browser, LinkedIn’s JavaScript executes a silent scan of your installed browser extensions. The scan probes for thousands of specific extensions by ID, collects the results, encrypts them, and transmits them to LinkedIn’s servers. The entire process happens in the background. There is no consent dialog, no notification, no mention of it in LinkedIn’s privacy policy.

This page documents exactly how the system works, with line references and code excerpts from LinkedIn’s production JavaScript bundle.

See https://browsergate.eu/how-it-works/

Sunday, January 25, 2026