Communications and control networks are protected. Web and e-mail filters shall be installed and used.

Centrally select and install malware detection and repair programs and update them regularly for preventive or regular scanning of computers and media.

Programs should check at least the following:

• files received over the network or storage media are scanned for malware before use
• email attachments and downloaded files are scanned for malware before use
• websites are scanned for malware

Cyber criminals can exploit configuration errors or technical vulnerabilities in applications, firewalls, or networks to access our information.

An organization must use defense-in-depth technologies to protect against, detect, and respond to cyber-attacks. The techniques should be suitable for controlling physical, logical and administrative controls.

The organization shall ensure that the monitoring and management of remote connections is automated, that remote connections are encrypted to ensure their integrity and reliability, and that remote connections pass only through approved and managed Network Access Control (NAC).

The organization must also make possible for the remote connections to be closed within a specified time.

Examples of traffic filtering and monitoring systems are firewalls, routers, intrusion detection or prevention systems (IDS / IPS) and network devices / servers / applications with similar functionalities.

To ensure the functionality of filtering and monitoring:

• An owner has been appointed for the systems, who takes care of the proper operation of the system throughout the life cycle of the data processing environment
• It is the responsibility of the system owner to add, change, and delete settings for systems that filter or control traffic
• Documentation of the network and associated filtering and control systems is maintained throughout its lifecycle as an integral part of the change and settings management process
• The settings and desired operation of the systems are checked periodically during the operation and maintenance of the data processing environment and in the event of exceptional situations

Endpoint security management system can be used to demand the desired security criteria from the devices before they are allowed to connect to the network resources. Devices can be laptops, smartphones, tablets or industry-specific hardware.

Criteria for the use of network resources may include e.g. approved operating system, VPN and antivirus systems, and the timeliness of these updates.

The use of the wireless network is secured with sufficient keys and the connection traffic to the network router is encrypted. The wireless network for guest use is isolated from the company's own internal network.