# NEXA and 51% attacks

**URL:** <https://forum.nexa.org/t/nexa-and-51-attacks/296>\
**Category:** General\
**Created:** [August 11, 2024, 12:22pm UTC](https://forum.nexa.org/t/nexa-and-51-attacks/296 "2024-08-11T12:22:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![select7](https://forum.nexa.org/letter_avatar_proxy/v4/letter/s/f0a364/32.png) [@select7](https://forum.nexa.org/u/select7)\
**Post date:** [August 11, 2024, 12:22pm UTC](https://forum.nexa.org/t/nexa-and-51-attacks/296/1 "2024-08-11T12:22:43Z")

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Would like to hear from the smart guys in here how Nexa is defending itself against 51% attacks currently. Also, wondering how much the cost to a bad actor would be to attack and dominate the majority of miners for the exploit. Thanks!

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**Author:** ![nexaholic](https://forum.nexa.org/user_avatar/forum.nexa.org/nexaholic/32/1108_2.png) [@nexaholic](https://forum.nexa.org/u/nexaholic)\
**Post date:** [July 31, 2025, 10:27am UTC](https://forum.nexa.org/t/nexa-and-51-attacks/296/2 "2025-07-31T10:27:42Z")

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GPU-Based Mining ProgPow  
Nexa uses a variant of ProgPow, that keeps the network spread across many small and mid-size miners, not just industrial farms.

Fast Block Times:  
Nexa’s high throughput (multiple blocks per second) makes it harder to reorganize the chain in large chunks, you’d have to race against a lot of blocks just to catch up.

Growing Hashrate:  
Which is going to increase.

Economic Disincentive:  
You’d have to invest a lot of resources to carry out an attack, with little gain.