For years, experts have warned of vulnerabilities in the network that routes phone calls and cellular service — but those attacks may be more widespread than anyone realized. For more than a year, a Tor Hidden Service has been offering ongoing access to telecom’s private SS7 network for as little as $500 a month. Combined with known vulnerabilities, that access could be used to intercept texts, track the location of an individual phone, or cut off cellular service entirely.
Accessible on Tor at zkkc7e5rwvs4bpxm.onion, the “Interconnector” service offers a variety of services charged as monthly fees, including $250 to intercept calls or texts, $500 for full access, or $150 for cellphone reports (including location data and IMSI numbers). Well-heeled users can even pay $5,500 for direct access to the SS7 port, billed as “everything you need to start your own service.”