# How does someone find a 17 blocks in 4 seconds? Time warp attack?

**URL:** <https://forum.zcashcommunity.com/t/how-does-someone-find-a-17-blocks-in-4-seconds-time-warp-attack/1583>\
**Category:** Mining\
**Created:** [September 7, 2016, 2:11pm UTC](https://forum.zcashcommunity.com/t/how-does-someone-find-a-17-blocks-in-4-seconds-time-warp-attack/1583 "2016-09-07T14:11:55Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![zawy](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zawy/32/11892_2.png) [@zawy](https://forum.zcashcommunity.com/u/zawy)\
**Post date:** [September 7, 2016, 5:32pm UTC](https://forum.zcashcommunity.com/t/how-does-someone-find-a-17-blocks-in-4-seconds-time-warp-attack/1583/13 "2016-09-07T17:32:25Z")

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In this post I gave the code to log difficulty. It records things as  
the info comes in if you keep it running all the time, so it can be used to diagnose trickery in the blockchain.

[https://forum.zcashcommunity.com/t/somebody-already-has-a-gpu-rig/1410/13](https://forum.zcashcommunity.com/t/somebody-already-has-a-gpu-rig/1410/13)

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