<p>Since <a href="https://github.com/bitcoin/bitcoin/pull/29575" rel="nofollow noreferrer">https://github.com/bitcoin/bitcoin/pull/29575</a>, any kind of misbehavior will trigger immediate discouragement. The PR itself describes some scenarios, see:</p>
<pre><code>The specific types of misbehavior that are changed to 100 are:

Sending us a block which does not connect to our header tree (which necessarily must have been unsollicited). [used to be score 10]
Sending us a headers with a non-continuous headers sequence. [used to be score 20]
Sending us more than 1000 addresses in a single addr or addrv2 message [used to be score 20]
Sending us more than 50000 invs in a single inv message [used to be score 20]
Sending us more than 2000 headers in a single headers message [used to be score 20]
The specific types of misbehavior that are changed to 0 are:

Sending us 10 (*) separate BIP130 headers announcements that do not connect to our block tree [used to be score 20]
Sending us more than 8 headers in a single headers message (which thus does not get treated as a BIP130 announcement) that does not connect to our block tree. [used to be score 10]
</code></pre>
<p>Besides these ones, there are some behaviors that previously would already trigger immediate discouragement, such as: too-large bloom filters, bad filteradd message, mutated blocks, peers on an invalid chain, and others.</p>

CC BY-SA 4.0
2024-09-19T16:51:57.967Z
2024-09-19T16:51:57.967Z
brunoerg
<p>Specifically I want to know, for which types of misbehaves does ban score algorithm give a ban score to a node?</p>

<peers><banscore>
How does ban score algorithm calculate ban score for a node?
Sakib
# How does ban score algorithm calculate ban score for a node?

(Asked by: username_0 on 2023-02-17)

Specifically I want to know, for which types of misbehaves does ban score algorithm give a ban score to a node?

**Tags:** peers, banscore


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## 1 answers

### Answer by username_1 on 2024-09-19. Score: 4

Since <https://github.com/bitcoin/bitcoin/pull/29575>, any kind of misbehavior will trigger immediate discouragement. The PR itself describes some scenarios, see:

```
The specific types of misbehavior that are changed to 100 are:

Sending us a block which does not connect to our header tree (which necessarily must have been unsollicited). [used to be score 10]
Sending us a headers with a non-continuous headers sequence. [used to be score 20]
Sending us more than 1000 addresses in a single addr or addrv2 message [used to be score 20]
Sending us more than 50000 invs in a single inv message [used to be score 20]
Sending us more than 2000 headers in a single headers message [used to be score 20]
The specific types of misbehavior that are changed to 0 are:

Sending us 10 (*) separate BIP130 headers announcements that do not connect to our block tree [used to be score 20]
Sending us more than 8 headers in a single headers message (which thus does not get treated as a BIP130 announcement) that does not connect to our block tree. [used to be score 10]

```

Besides these ones, there are some behaviors that previously would already trigger immediate discouragement, such as: too-large bloom filters, bad filteradd message, mutated blocks, peers on an invalid chain, and others.


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