# Resisting (D)DoS attacks by light clients **URL:** \ **Category:** Tech Talk\ **Created:** [September 26, 2023, 12:35pm UTC](https://forum.polkadot.network/t/resisting-d-dos-attacks-by-light-clients/4047 "2023-09-26T12:35:35Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![seunlanlege](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.polkadot.network/seunlanlege/32/285_2.png) [@seunlanlege](https://forum.polkadot.network/u/seunlanlege)\ **Post date:** [September 27, 2023, 6:26pm UTC](https://forum.polkadot.network/t/resisting-d-dos-attacks-by-light-clients/4047/11 "2023-09-27T18:26:21Z")
Didn’t we already conclude here that people need to some how pay for light client data? Specifically state proof data. > [@Light Client Data Incentivation Protocol](https://forum.polkadot.network/t/light-client-data-incentivation-protocol/1021): > > So i had a brief discussion with @tomaka about the neccessity of a light client data incentivization protocol for parachain teams. The reasoning is light clients are essentially parasites on the full nodes of the network and so the request/response protocol that serves light clients can also be a DDOS vector for adversarial parties of the network. In order to make the network resilient against these kinds of attacks, we must introduce a light client data incentivization protocol. Tomaka sugges… People already pay for so called “RPC servers”. So a protocol-enshrined data market doesn’t seem far fetched. I also don’t think it’s far-fetched that bad actors will DDOS all full nodes with light client requests. I mean just look at the griefing attack on kusama > [@Stalled parachains on Kusama - post mortem](https://forum.polkadot.network/t/stalled-parachains-on-kusama-post-mortem/3998): > > Stalled parachains on Kusama - post mortem Special thanks to @tsvetomir and @eskimor for writing the majority of this post mortem. On September 1st, 2023 at around 06:14 UTC all parachains on Kusama stopped producing blocks (stalled). The relay chain was not affected - it was producing and finalizing blocks without any interruptions. A TL;DR version is available at the end. Investigation Further inspection showed that a dispute has been initiated and concluded “Invalid” at [block 19485524](https://kusama.subscan.io/block/19485524): --- _[View the full topic](https://forum.polkadot.network/t/resisting-d-dos-attacks-by-light-clients/4047)._