SensorFu

DNS Servers in Isolated Networks — Will they Leak?

When it comes to isolating networks, DNS servers require special attention. DNS servers may leak information from isolated network by proxying queries all the way to the Internet. At worst, a malicious actor can smuggle secrets out.

Isolated Networks in the Cloud

Network isolation is an vital part of any layered security approach. It’s used by all players, from small businesses to large organizations, in different capacities. More demanding networks require a high level of outbound filtering, to prevent data exfiltration and lessen…

Why Ethernet Broadcast Escape Tests Matter

We recently implemented a network escape to SensorFu Beacon that uses Ethernet broadcasts. Why? First of all you can test all the hosts in the LAN (Local Area Network) with one packet. Second, with broadcast frames, all the devices in the LAN think the…

Using static typing to protect against code injection attacks

Code injection attack is a method of taking advantage of a flaw where an application can be tricked to relay malicious code from a system to another system which then executes it. Common examples of such flaws are SQL…

Continuous testing but with irregular schedule

Almost but not quite half an hour

Easy|Secure|Reliable: Not Just in the Marketing Materials

SensorFu’s Beacon is unlike some other software appliances. While these try to support loads of features, and weird use-cases, we don’t. Beacon does one thing: it calls home. This lets us make deployments as straightforward as…

Special Privileges: No thanks!

Changes to network configuration can be difficult and time consuming to do. Today’s networks are virtualized, complex and outsourced to 3rd party data centers ran by contractors.Many things can go wrong, and it takes time and effort to communicate, implement and validate the…

The Story about Ping

Beacon sends Pings towards Home. Ping contain just enough information (and nothing more) for Home to understand where the Ping came from, who sent it and where it was sent to. If Home receives a Ping, it studies the content and sends an alert informing you that something happened.