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As many of you already know, the WhatsApp application has an end-to-end encryption feature, which, according to reports, it doesn’t allow anyone else to see (besides you and the person you’re chatting with) the messages that you send receive via WhatsApp.

Now everyone is asking themselves how WhatsApp is able to detect SPAM messages and how do they stop them without reading messages. Matt Jones, a WhatsApp engineer, has explained that they had to develop new approaches to detect spam without relying on content at all.

Jones has explained that if you have well-instrumented behavioral features, it’s “possible to detect spam without any access to the message content in an end-to-end encrypted world.”

The engineer has added that WhatsApp takes into account a lot of data when deciding if someone is spamming or not. For example, that specific list includes data such as: the phone number attached to the account, the Internet Service Provider (ISP), the phone network that’s being used and many other things. This data is then compared to previous spam reports and if the ISP’s data or the phone number prefix has been associated with spammers before, it will most likely get flagged as a spam message.

Another important element to this algorithm is whether an individual has reported that message as spam before. When this happens, the company looks back at its pattern of actions, and adds that incident to the database, which means that it helps the system to fight more easily against unwanted messages.

Finally, WhatsApp is banning users that are based on these models, but you should know that a ban can be appealed if the specific ban was a mistake. According to reports, the incorrect bans have been reduced to 50%, which clearly shows that the algorithm has been improved.

What do you think of WhatsApp’s efforts to fight spam?