Horizen (ZEN) Statement On Mining Algorithm

The Horizen team carefully evaluated the pros and cons of changing from the existing Equihash Proof of Work mining algorithm. This was caused by two events that happened close together in time. One was the double spend attack that was made against an exchange partner, and the other was the appearance of Equihash ASIC miners for sale to the public.
https://blog.zencash.com/horizen-zen-statement-on-mining-algorithm/?utm_source=blog&utm_medium=social&utm_content=mining&utm_campaign=mining+algo