# Discussions for CGP 15: Extend Attestation Expiration Duration

**URL:** <https://forum.celo.org/t/discussions-for-cgp-15-extend-attestation-expiration-duration/682>\
**Category:** Governance\
**Created:** [November 23, 2020, 2:30pm UTC](https://forum.celo.org/t/discussions-for-cgp-15-extend-attestation-expiration-duration/682 "2020-11-23T14:30:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yaz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.celo.org/yaz/32/224_2.png) [@Yaz](https://forum.celo.org/u/Yaz)\
**Post date:** [November 23, 2020, 2:30pm UTC](https://forum.celo.org/t/discussions-for-cgp-15-extend-attestation-expiration-duration/682/1 "2020-11-23T14:30:35Z")

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Discussions for CGP 15: Extend Attestation Expiration Duration found [here](https://github.com/celo-org/celo-proposals/blob/master/CGPs/0015.md).

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**Author:** ![aslawson](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.celo.org/aslawson/32/403_2.png) [@aslawson](https://forum.celo.org/u/aslawson)\
**Post date:** [January 8, 2021, 7:31pm UTC](https://forum.celo.org/t/discussions-for-cgp-15-extend-attestation-expiration-duration/682/2 "2021-01-08T19:31:52Z")

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**Q:**

> I believe part of the reason attestations expire was to prevent collusion between validators. Have we decided that this isn’t important? Or that 1 day is not enough time for collusion?

**A:** The attack in getting 3 validators to collude doesn’t seem much easier with the extra time for the following reasons.

1. Already, they can collude before making the requests. For this route, they would statistically need to make a bunch of issuer requests before being randomly paired with the colluding validators. So their rate of successful verifications should be low. Time for expiration does not impact this.
2. The other avenue is to get paired with 3 random issuers and actively convince them to collude. So it’s more of a question of likelihood that 3 random validators would be convinced to change their attestations service for a request within 1 day. Feels low risk, but let me know if you or anyone thinks differently?