Three Lessons for Mitigating Network Security Risks in 2015: Bring Your Own Device
Not too long ago, organizations fell into one of two camps when it came to personal mobile devices in the workplace – these devices were either connected to their networks or they weren’t.
But times have changed. Mobile devices have become so ubiquitous that every business has to acknowledge that employees will connect their personal devices to the corporate network, whether there’s a bring-your-own-device (BYOD) policy in place or not. So really, those two camps we mentioned earlier have evolved – the devices are a given, and now, it’s just a question of whether or not you choose to regulate them.
This decision has significant implications for network security. If you aren’t regulating the use of these devices, you could be putting the integrity of your entire network at risk. As data protection specialist Vinod Banerjee told CNBC, “You have employees doing more on a mobile device and doing it ad hoc here and there and perhaps therefore not thinking about some of the risks that are apparent.” What’s worse, this has the potential to happen on a wide scale – Gartner predicted that, by 2018, more than half of all mobile users will turn first to their phone or tablet to complete online tasks. The potential for substantial remote access vulnerabilities is high.
So what can risk practitioners within IT departments do to regain control over company-related information stored on employees’ personal devices? Here are three steps to improve network security:
1. Focus on the Increasing Number of Endpoints, Not New Types
Employees are expected to have returned from holiday time off with all sorts of new gadgets they received as gifts, from fitness trackers to smart cameras and other connected devices.
Although these personal connected devices do pose some network security risk if they’re used in the workplace, securing different network-enabled mobile endpoints is really nothing special for an IT security professional. It doesn’t matter if it’s a smartphone, a tablet or a smart toilet that connects to the network – in the end, all of these devices are computers and enterprises will treat them as such.
The real problem for IT departments involves the number of new network-enabled endpoints. With each additional endpoint comes more network traffic and, subsequently, more risk. Together, a high number of endpoints has the potential to create more severe remote access vulnerabilities within corporate networks.
To mitigate the risk that accompanies these endpoints, IT departments will rely on centralized authentication and authorization functions to ensure user access control and network policy adherence. Appropriate filtering of all the traffic, data and information that is sent into the network by users is also very important. Just as drivers create environmental waste every time they get behind the wheel, network users constantly send waste – in this case, private web and data traffic, as well as malicious software – into the network through their personal devices. Enterprises need to prepare their networks for this onslaught.
2. Raise the Base Level of Security
Another way that new endpoints could chip away at a network security infrastructure is if risk practitioners fall into a trap where they focus so much on securing new endpoints, such as phones and tablets, that they lose focus on securing devices like laptops and desktops that have been in use for much longer.
It’s not difficult to see how this could happen – information security professionals know that attackers constantly change their modus operandi as they look for security vulnerabilities, often through new, potentially unprotected devices. So, in response, IT departments pour more resources into protecting these devices. In a worst-case scenario, enterprises could find themselves lacking the resources to both pivot and mitigate new vulnerabilities, while still adequately protecting remote endpoints that have been attached to the corporate network for years.
To offset this concern, IT departments need to maintain a heightened level of security across the entire network. It’s not enough to address devices ad hoc. It’s about raising the floor of network security, to protect all devices – regardless of their shape or operating system.
3. Link IT and HR When Deprovisioning Users
Another area of concern around mobile devices involves ex-employees. Employee termination procedures now need to account for BYOD and remote access, in order to prevent former employees from accessing the corporate network after their last day on the job. This is particularly important because IT staff have minimal visibility over ex-employees who could be abusing their remote access capabilities.
As IT departments know, generally the best approach to network security is to adopt policies that are centrally managed and strictly enforced. In this case, by connecting the human resources database with the user deprovisioning process, a company ensures all access to corporate systems is denied from devices, across-the-board, as soon as the employee is marked “terminated” in the HR database. This eliminates any likelihood of remote access vulnerabilities.
Similarly, there also needs to be a process for removing all company data from an ex-employee’s personal mobile device. By implementing a mobile device management or container solution, which creates a distinct work environment on the device, you’ll have an easy-to-administer method of deleting all traces of corporate data whenever an employee leaves the company. This approach is doubly effective, as it also neatly handles situations when a device is lost or stolen.
New Risks, New Resolutions
As the network security landscape continues to shift, the BYOD and remote access policies and processes of yesterday will no longer be sufficient for IT departments to manage the personal devices of employees. The New Year brings with it new challenges, and risk practitioners need new approaches to keep their networks safe and secure.