Organic BYOD has been criticised for exposing corporate data to breaches and security attacks. CYOD policies are sometimes bashed for restricting devices to safeguard business-critical information.For some companies the risks are worth taking but for others security is still prized more highly than employee satisfaction.Security arguments against first-generation BYOD principles are frequently countered by claims that letting people use their own technology saves money – a convincing consideration for smaller enterprises.But expanding the choice of CYOD devices to make users happier can cost more than many anticipate. HP highlights the costs of having to support multiple operating systems and hardware platforms, and device manufacturers could also have a problem with CYOD.“Insight has spoken to more than 100 providers concerned that they would lose control over the buying cycle and lose their position on the supply chain, and that end-users might even go to consumer stores to buy low-grade products rather than the professional equipment manufacturers would provide,” says Cornum.A Russian research team has found vulnerabilities in millions of the world's SIM cards, and separate flaws in common 4G modem platforms. Together, the bugs could allow attackers to send crafted SMS text messages to gain access to critical systems and install malware on connected computers.

In one dramatic and hypothetical example, the research team of six from outfit SCADA StrangeLove showed how track switching mechanisms in the European Rail Traffic Management System could be altered by remote attackers targeting computers and devices on trains and tracks.They found what fellow SRlabs researcher Karsten Nohl estimated was 'millions' of the world's SIM cards that could be impersonated by attackers who captured the users' Temporary International Mobile Subscriber Identity and decryption key (Kc), numbers that were designed to stop eavesdropping between devices and phone towers.It built on Nohl's research last year that revealed SIM flaws could allow attackers to intercept calls and target wireless NFC applications like contactless payments through crafted text messages.He found telcos had done little in the two months to September to fix the flaws. They now face further attack vectors in SIMs and mobile 4G dongles.Attackers would need four flaws to align to take advantage of the remote Kc disclosure, including as Nohl explained to Vulture South:

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