Paolo Ardoino (Tether CTO) has confirmed that Tether’s website, tether.io is currently under a DDOS attack. On Saturday, June 18, the number of requests to the website increased by 2,000 to 8,000,000 per five minutes. Below is a chart that shows the rise in requests.
Source: Twitter
Ardoino confirmed that the attack was now mitigated, but they are still “leaving the ‘I’m under attack mode’ enabled” in order to reduce further risk. According to Tether CTO, this additional security measure “won’t affect the capability of redeeming,” as stated by the Tether CTO.
Under attack mode
Cloudflare’s DNS management feature “I’m Under Attack Mode” protects websites against DDOS attacks. Users must complete additional steps to access the website. This causes a delay of a few seconds for human users who view the website using a standard web browser while the browser attempts to complete a Javascript challenge.
The browser may not be able to complete the challenge and the user will need to fill in a captcha to access the website. DDOS attacks often use remote servers to request the website from outside the browser.
These methods will fail to meet the challenge request and get kicked from the server. Cloudflare takes care of all excess demand, leaving the website to continue performing its normal tasks. Ardoino confirmed that the problem was due to “it takes quite a while for the auto-scale adjust to work.” This refers to the ability to scale up resources to meet unexpected increases in demand.
Paolo tweeted earlier on Saturday that “It would be a long weekend,” although it is unlikely it was due to an attack against Tether’s website.
Tether confirms DDOS attack against tether.io CryptoSlate.
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