List of DDoS attacks took place during the month of September 2020.
| Date of attack | Country | Industry | Downtime | Company Affected | Size of Company | Attack Details | Press Link |
| Sep 11 | Germany | Email Service Provider | 1 month | Tutanota | Medium | A series of DDoS attacks, for a month , made Tutanota inaccessible on and off ,for millions of users around the world. | Click here |
| Sep 11 | Iceland | Telecom | NA | Iceland country’s main telecommunications- and colocation hosting services | NA | The attack led to a feeling of ‘uncertainty’, for the first time in history with regard to telecom services in Iceland | Click here |
| Sep 3 | Netherlands | Telecom | 4 hrs. | Freedom | Medium | The DDoS attacks reached a volume of 300Gbits and affected customer services for the duration of the attack | Click here |
| Sep 3 | Netherlands | Telecom | 1 day | Online.NL | Enterprise | Same as above | Click here |
| Sep 3 | Netherlands | Telecom | 1 day | Signet | Small | Same as above | Click here |
| Sep 3 | Netherlands | Telecom | 1 day | Tweak.NL | Small | Same as above | Click here |
| Sep 3 | Belgium | Telecom | 1 day | EDP | Enterprise | Same as above | Click here |
| Sep 2 | USA | Financial Institution | NA | TransUnion | Enterprise | As a result of the attack, customers could not access their credit reports. | Click here |
| Sep 2 | USA | Financial Institution | 3 days | Hudson Independent School District | Enterprise | 10,000 requests per second, i.e. 36 million requests per hour rendered the website inaccessible. | Click here |
| Sep 2 | New Zealand | Telecom | NA | Spark Xtra Mail | Enterprise | Several Xtra Mail customers were unable to access their accounts during the attack | Click here |
| Sep 2 | Nertheland | Telecom | NA | Caiway | Medium | The attack affected user experience on interactive TV. | Click Here |
| Sep 2 | France | Telecom | 1 day | SFR | Enterprise | Internet services affected with 1000s reporting breakdowns and unusual delays in connecting to websites throughout France | Click Here |
| Sep 2 | France | Telecom | 1 day | Bouygues Telecom | Enterprise | Same as above | Click Here |
| Sep 2 | New Zealand | Government | NA | MetService | Medium | Intermittent attack over a few days which caused the site to go down | Click Here |
| Sep 1 | Switzerland | Telecom | 1 day | Swiss Sign | Medium | Lost a key customer as email provider ProtonMail moved over to Let’s Encrypt amid the disruption. | Click Here |
| Sep 1 | USA | Education | 2 hrs. | Pickens County Schools | NA | Students and teachers in Pickens County were unable to login to any district portals. | Click Here |
| Aug 29 | USA | Financial Services | NA | Monegram & PayPal | Enterprise | Bitcoin payment as extortion fees to stop attacks of up to 200 GB/sec bandwidth, on backend infrastructure, DNS servers, and API endpoints | Click Here |
