Security chap Karsten Nohl, of Berlin’s Security Research Labs, reckons the billions of mobile phones that use GSM technology are vulnerable to premium-rate hijacking.
Essentially, GSM peeps, which of course includes us in the UK, could find their phones forced to send premium-rate texts and make ultra-expensive calls. Eek.
Speaking ahead of a presentation in Berlin, Karsten told Reuters: "We can do it to hundreds of thousands of phones in a short time frame," though he omitted to say how. Phew.
Karsten adds: "Mobile network is by far the weakest part of the mobile ecosystem, even when compared to a lot attacked Android or iOS devices."
That statement is backed up by a survey across 32 GSM operators in 11 countries, namely Austria, Belgium, the Czech Republic, France, Germany, Hungary, Italy, Morocco, Slovakia, Switzerland and Thailand.
This isn’t the first bout of scaremongering from Security Research Labs. Almost exactly one year ago, Karsten and partner Sylvain Munaut told BBC News that mobile calls and texts on any GSM network were open to eavesdropping.