I'll venture to guess you're using a mobile device to read this. In a recent Ericsson Mobility Report, the total number of mobile subscriptions at the end of 2016 was approximately 7.5 billion and growing around 4 percent year-on-year.
Greater speed, power and storage capabilities of mobile devices means they are used more frequently for activities previously reserved for laptops or PCs.
In this increasingly mobile-first world, organisations are turning to mobile applications that enable them to better interact with their customers and provide new tools for employees. While mobile applications offer a host of new opportunities, they can also introduce risk.
At the end of last year, the US Federal Trade Commission warned of fake apps impersonating well-known retailers and stealing consumers' personal information. More recently, the UK's National Cyber Security Centre (NCSC) and the National Crime Agency (NCA) released a joint paper on the cyber threats to UK businesses. The report included an examination of the emerging threat from malicious mobile applications. While at the time no cases of mobile malware being used in an attack to pivot into a corporate enterprise network had been reported, the threat is growing and overall attacks involving mobile malware have increased in volume and sophistication.
Mobile devices and applications are highly lucrative and viable targets to threat actors. Although the majority of individuals download apps from Apple App Store and Google Play, which mitigates risk, this is not the case for all users. There are many unofficial stores that allow your customers or employees to install mobile applications that are often not actively managed by their developers or rigorously reviewed prior to listing.
In addition these stores often require than a user's device is “jailbroken” or “rooted,” placing it at even greater risk of exploitation by malicious actors. There have also been instances where apps infected with malware have managed to infiltrate official stores – so even those stores aren't risk-free. For example, in January 2017 ransomware was identified bundled together with an information stealer masquerading as a battery saving app available for download from the Google Play store. The app has since been removed from the store.
So what can you do to better protect yourself from such threats? First, all mobile users should benefit from knowing what threats are lurking. There are five aspects to mobile device risk that organisations and users need to be on the lookout for:
- Your apps – Suspect behavior and code within your own apps, such as self-signed certificates or the presence of malware.
- Modified apps – Versions of your own mobile applications that have been modified by a third party.
- Copied apps – Copies of your own mobile applications on stores that you are not actively managing them on.
- Impersonating apps – Mobile apps that spoof or mimic your branding or identity.
- Affiliate links – Links to your own mobile applications that may mislead or confuse users.
Even if your organisation doesn't use mobile apps or SMS communication, you still may be at risk of threat actors targeting your customers through malicious and illegitimate applications, or through SMS phishing (aka SMishing) attacks. SMishing attacks use the same techniques as traditional phishing attacks to persuade the user into disclosing personal information, downloading a file or app, or visiting a malicious site.
With knowledge of these risks, now you can begin to mitigate them. A good starting point is to institute user education around mobile application risks. This includes the risk of purchasing from third-party stores, downloading cracked versions of applications, and granting requests for intrusive permissions and privileges.
Organisations should also ensure that mobile device operating systems are up to date, helping to prevent against the exploitation of vulnerabilities by threat actors. Finally, companies should monitor not just third-party apps but internal company mobile apps, and take appropriate remediation measures including: blocking the use of older versions, resetting passwords, blocking jailbroken devices from your services and white listing apps that are sanctioned.
We can expect bad actors will increasingly take advantage of the rise in mobile device and application use to steal customer data and intellectual property, divert revenue, and damage your brand and reputation. But by understanding what's up with your apps, you can mitigate the digital risk to your organisation, employees and customers.