Essential guide to mobile security
Security threats have increased significantly since the boom in mobile working.
Make sure you are fully protected by following our essential guide to mobile security.
By implementing centralized policies and control, you can achieve a healthy balance
between supporting employees’ productivity and preventing data breaches.
1. Audit your devices
Poor asset management in many organizations means that companies often don't
have a clear idea of which mobile devices they own. By keeping track of the mobile
devices in use, you can reconcile the equipment in your database with what employees
still have in their possession. In addition you will need to have technology in
place to block unauthorized devices from using the network. All these tasks should
be centralized and automated with software tools.
2. Stop the mobile transfer of inappropriate data
Why allow your customer list to leave the office on someone's laptop when they
have no reason to take it? Data loss prevention technology can stop inappropriate
information from being copied across the network or to removable devices like
USB sticks. Use the concept of least privilege, allowing users access only to
the files that they need for their jobs. You will also need the flexibility to
apply a different set of rules for senior executives.
3. Protect your devices
It is vital to have technology in place for remote wipe/kill of lost and stolen
devices, but while this is a useful defensive measure, alone it is not enough.
It only works after the device connects to the Internet and receives notification
that it has been stolen, which gives the criminal a window of opportunity to steal
data from the device. You should strongly consider complementing such technology
with hardware encryption to scramble data on the drive. For added defense, consider
issuing employees with a two factor authentication device such as a smart card
that must be used to encrypt the system. Do this and you reduce the risk of compromised
passwords or PINs. This protection will need to be centrally managed and apply
to all devices.
4. Use network access control
Mobile devices used outside of the corporate network are outside your control,
which means that they may become infected with malware. Network access control
is becoming a common way of solving this problem, and it can be carried out at
the devices or network level. For example, it can stop users from roaming on unsecured
networks, picking up malware and then importing it onto the company LAN. Devices
found that are not compliant with the security policy can be denied access until
they are fixed.
5. Over-the-air patch management
An extension of this service involves patching systems over the air. Whenever
devices are connected to the network, they should look for updates, particularly
if out of the office for extended periods. Again this process needs to be automated
to ensure security.
6. Encrypt your connection
To connect securely back to the office, your mobile devices will need a virtual
private network (VPN). A VPN is especially important in a public WiFi setting,
where network packets will be 'sniffable' over the air. Secure sockets layer (SSL)
VPNs are becoming increasingly common for use with smart phones and laptop computers.
They protect individual applications, rather than the whole network and use web
browsers’ inbuilt SSL security.
7. Train staff
Training is a vital part of security, and users will need to be reminded of the
risks that they face when out of the office. Training also needs to be tailored
to each specific user type so that all employees know what they have to do and
what their responsibilities are.