A researcher was able to uncover 96% transactions of Mimblewimble’s privacy-centric coin Grin using $60 per week on AWS
Source: https://cointelegraph.com/news/researcher-breaks-grins-privacy-spending-just-60-per-week
Researcher Breaks Grin’s ‘Privacy’ Spending Just $60 Per Week
November 18, 2019
CoinTelegraph