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Mobile App Threats Keep On Growing

Written by  Sam Leach Jun 14, 2018
Criminals looking to profit from corporate resources and information keep going after mobile devices, two new reports confirm.

Security threats aimed at mobile devices are evolving and shifting – and show no sign of going away. Those are the key results found in a pair of just-released reports on mobile security.

More specifically, the reports look at the security of third-party mobile applications and the effectiveness of carrier-based protection. The picture that emerges is one of risk that varies across industries but is never truly low, as well as the importance of trying to stop the actions of malicious apps as high in the network chain as possible.

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In its study of third-party app risk, BitSight researchers found that vulnerable apps are common across all industries, with the vulnerabilities including data leakage, privilege abuse, unencrypted personally identifiable information, and credential theft. The differences are in the proportion of vulnerabilities that make up the total picture of each industry.

For example, BitSight's research shows that finance had the highest rate (34%) of broken SSL configurations, while 32% of business services and education apps failed at encrypting user data. But in no industry is there a single, simple vulnerability. As Immunity researcher Lurene Grenier said at the recent Talos Threat Summit, "There are probably 10 full iPhone [exploit] chains at any given time. And that's the most secure calling platform."

In a speech at Interop ITX in May, Mike Murray, vice president of security intelligence at Lookout, pointed out why criminals are so interested in mobile malware. "The phone is no longer a phone. It's an electronic device that has access to every part of our digital lives," he said. "Unfortunately, we still think of it and protect it like it's a Motorola flip-phone."

A second report, Telco Security Trends, Q2 2018, conducted by Allot, looks at malware traffic from four communications service providers (CSPs) across Europe and Israel. It found that the CSPs were stopping an average of two pieces of malware per device per day.

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From November 2017 through February 2018, cryptomining malware made up the largest single threat, Allot reports, with various adware attacks and phishing messages the next most popular types.

Adware forms an interesting block of threats because its victims are often legitimate advertisers as well as consumers. Pixalate recently found new mobile app laundering malware that spoofs ad activity so that advertisers believe they are paying for ads that are shown — but no consumer ever does. The consumer impact is on the performance of their devices, which might see a CPU spike while "rendering" images and content that is never actually displayed.

Allot's report also looks at IoT devices connecting to the CSP networks, confirming a growing issue with these "headless" devices and the threats they face from malware. The research reinforces a point Murray made in May when he said, "Capabilities are changing cyber warfare, and everyone is in the game."

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