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An application that creates background noises to mask speech, conversations and to protect you from any hidden surveillance equipment

editor's review




If you happen to own a business, you probably already know how important privacy is for the success of your company. It is enough for a single idea to get intercepted by your competitors and you can suffer major financial losses.

Defender is a software solution that aims to keep your conversations safe from audio surveillance devices and other intercepting mechanisms based on capturing sound signals.

Select the noise type and view the volume levels

The application provides you with various types of noises, each one with its benefits depending on the nature of the situation. You can choose from digital, flicker, white and analogue noises. These can count different types of surveillance equipment, so it helps if you know what to expect and use the right tool for the job.

Defender also displays a volume level monitor, to let you know if the generator is working and at what capacity. Each type of noise has different volume and range requirements to work properly, so it is recommended that you keep an eye on it.

Set the frequency limit and select the number of channels

You can set the desired frequency limit using the dedicated field inside the application, from a minimum of 5000 Hz and up to maximum 30000 Hz, highly dependent on the type of blocking noise you are using and the nature of the monitoring equipment.

Defender enables you to generate sound on both the left channel, as well as the right channel. You can even render different noises on each one and use different frequency ranges. This can be used to achieve more potent combinations required to interfere with high-quality surveillance devices.


Private businesses are always at risk of being spied on by rival companies, especially if they deal with highly sought-after electronic devices. One overheard conversation can give away the main idea behind an innovative technology and you lose the advantage over your competitors, as well as a big part of the financial profit.

Defender is a powerful and complex application that can mask your conversations, by generating various types of noises to block any surveillance equipment in your vicinity and keep your inventions and other company secrets private from any unwanted attention.

Defender was reviewed by Alexandru Dulcianu
Last updated on June 3rd, 2014
Defender - You select the type of noise, frequency range and the number of channels from the main window of the application.

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