In May 2020, the hacking forum Nulled.ch was breached and the data published to a rival hacking forum. Over 43k records were compromised and included IP and email addresses, usernames and passwords stored as salted MD5 hashes alongside the private message history of the website's admin. The data was provided to HIBP by a source who requested it be attributed to “Split10”.

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In February 2020, a massive trove of personal information referred to as “db8151dd” was provided to HIBP after being found left exposed on a publicly facing Elasticsearch server. The exposed data could not be attributed to an owner and appears to be related to a CRM which aggregated personal information and customer interactions. The data was provided to HIBP by dehashed.com.

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In January 2020, the travel app creator Ulmon suffered a data breach. The service had almost 1.3M records with 777k unique email addresses, names, passwords stored as bcrypt hashes and in some cases, social media profile IDs, telephone numbers and bios. The data was subsequently posted to a popular hacking forum.

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In January 2020, the Indian fashion marketplace Elanic had 2.8M records with 2.3M unique email addresses posted publicly to a popular hacking forum. Elanic confirmed that they had “verified the data and it was pulled from one of our test servers where this data was exposed publicly” and that the data was “old” (the hacking forum reported it as being from 2016-2018). When asked about disclosure to impacted customers, Elanic advised that they had “decided to not have as such any communication and public disclosure”.

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In November 2019, the Vietnamese education website TaiLieu allegedly suffered a data breach exposing 7.3M customer records. Impacted data included names and usernames, email addresses, dates of birth, genders and passwords stored as unsalted MD5 hashes. The data was provided to HIBP by dehashed.com after being shared on a popular hacking forum. TaiLieu did not respond when contacted about the incident.

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In April 2020, Indonesia's largest online store Tokopedia suffered a data breach. The incident resulted in 15M rows of data (allegedly a subset of the complete breach) being posted to a popular hacking forum. The data included over 12M unique email addresses alongside names, genders, birth dates and passwords stored as SHA2-384 hashes.

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In April 2020, the Nepalese internet service provider Vianet suffered a data breach. The attack on the ISP led to the exposure of 177k customer records including 94k unique email addresses. Also exposed were names, phone numbers and physical addresses.

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In April 2020, the independent Android app store Aptoide suffered a data breach. The incident resulted in the exposure of 20M customer records which were subsequently shared online via a popular hacking forum. Impacted data included email and IP addresses, names, IP addresses and passwords stored as SHA-1 hashes without a salt.

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In January 2020, the Spanish mobile phone forum HTC Mania suffered a data breach of the vBulletin based site. The incident exposed 1.5M member email addresses, usernames, IP addresses, dates of birth and salted MD5 password hashes and password histories. Data from the breach was subsequently redistributed on popular hacking websites.

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In April 2020, the account hijacking and SIM swapping forum OGUsers suffered their second data breach in less than a year. As with the previous breach, the exposed data included email and IP addresses, usernames, private messages and passwords stored as salted MD5 hashes. A total of 263k email addresses across user accounts and other tables were posted to a rival hacking forum.

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