Worldwide list of DDoS attacks took place during the month of March 2021
| Date of attack | Country | Industry | Downtime | Company Affected | Size of Company | Attack Details | Press Link |
| Mar 31 | China | Government | 9 Hours | Inter-Parliamentary Alliance on China’s website | NA | The DDoS attack caused the site to slow significantly and, in some cases, crash. | Click here |
| Mar 24 | Korea | Telco | 40 Minutes | Naver | Large | Korea’s top internet portal, Naver’s news, blog and online cafe sites went down. | Click here |
| Mar 18 | USA | Gaming | NA | Oakland Athletics | Small | Oakland Athletics’ fans were met with error messages on the first day of ticket sales. | Click here |
| Mar 17 | Korea | Financial Services | NA | Terra Labs | Small | Anchor, its lending platform, suffered a large scale DDoS attack on the day of its launch. | Click here |
| Mar 14 | USA | Education | NA | East Greenwich High School (EGHS) | Small | The attack halted a virtual conference with actor LeLand Gantt about his one man play, ‘Rhapsody in Black’. | Click here |
| Mar 12 | Japan | Gaming | 3 weeks | Sony Computer Entertainment | Large | Fans of the popular video game LittleBigPlanet have been unable to access online features | Click here |
| Mar 10 | Philippines | Government | 6 hours | Philippine government website Gov.ph | NA | Attempts to access the site showed `internal server error’ message and was inaccessible to all. | Click here |
| Mar 8 | Italy | Government | 24 Hours | Italian Lower House of Parliament | NA | The attack brought the website down | Click here |
