Security: anti-spam chat bot

You open a chat after a night and find ten ad links, three archives of unknown origin and one "urgent income" offer. Deleting all that by hand is tiring, and you have no moderators. The Security bot solves one task and does it without conversation: it removes messages of forbidden types from your chat.

One task, but a clear one

By the bot's description, it deletes messages of blacklisted types: links, files and others. You decide what does not belong in your chat, and the bot makes sure it does not appear.

There are no extra modules, games or statistics. For a small community, that narrowness is more of a plus than a minus: fewer settings, less confusion.

What people usually block

Message type works well as a criterion in chats. Below are the common choices admins forbid.

• Links. The main spam channel: ads, suspicious invitations and "giveaways".
• Files. Archives and documents from strangers can carry viruses.
• Voice and video messages. In business or learning chats they are often restricted so a thread reads quickly.
• Stickers and GIFs. In a working chat they clutter the conversation.

Connecting the bot to a chat 🛡️

1. Add the bot to the group. Find it and invite it like an ordinary member.
2. Make it an administrator. It needs the right to delete messages: without it the bot can remove nothing.
3. Choose the types to block. Start with links, the most common source of junk.
4. Test it. Send a test message of a forbidden type from another account.

Give administrator rights sparingly. The bot's task needs only message deletion, and nothing else.

When a type filter is not enough

Spam knows how to disguise itself. Plain text without links can be an ad too, and a file may hide malware. A bot that cuts by type does not judge the meaning of a message.

So protection should come in layers: a type filter, clear chat rules and a couple of live moderators on the team. The bigger the chat, the more the last one matters.

A good setup order: turn on link blocking first, watch the chat for a week, then add other types as needed. That way you see the real picture and do not forbid more than necessary.

A welcome message with short rules helps new members. It cuts accidental violations and questions like "why did my message disappear".

Rules that help a chat

Publish the rules in a pinned message: what is forbidden, what gets deleted and what to do after a mistake. If the bot deletes everything in sight, members at least know why.

Sometimes exceptions are needed. Admins and trusted members occasionally need links, so think ahead about how certain people will share useful material.

Keep an eye on what gets deleted. If legitimate messages vanish too often, the restrictions are too strict and should be loosened.

Security points to remember

Any bot with administrator rights can see the chat's messages. Make sure you connect the right bot and not a lookalike with a similar name, and use links from official sources.

It is easier to send questions about the bot to the support chat listed in its profile.