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Polygon logo, a purple angled infinity symbol next to the wordPolygon logo (attribution)
Polygon lost a bit over $2 million after a hacker exploited a bug involving a lack of balance/allowance check in their MRC20 contract. Polygon had been in the process of releasing a patch for the vulnerability, which had been reported by a white-hat hacker, and released an emergency upgrade the following day. The silent, zero-warning hard fork raised some eyebrows, and Polygon didn't release details until several weeks later. Polygon ultimately paid about $3.5 in bug bounties to two white-hat hackers who submitted reports, which was far less than the total value of Polygon's $MATIC tokens, all 9.2 billion of which (worth around $24 billion) could have been stolen by an attacker using this vulnerability.
Theme tags: Bug, Hack or scam
Blockchain tags: Blockchain: Polygon
Tech tags: cryptocurrency

Tether logo: a T with a circle around the stem, overlaid on a white diamondTether logo (attribution)
Tether minted more than $3 billion in a two week span. This brings the total amount of USDT (which is supposed to be equivalent to the U.S. dollar) to 76 billion, and much of it was minted this year. If Tether actually had reserves to back this up, as they claim, they would be one of the largest banks. However, as the Financial Times reported, in March 2021 "the stablecoin that used to say it was 100 per cent backed by cash reserves is in fact . . . 2.9 per cent backed by cash reserves".
Theme tags: Shady business
Tech tags: DeFi, cryptocurrency

BitMart, "the most trusted cryptocurrency trading platform", experienced a major breach in which attackers stole approximately $200 million of various cryptocurrencies. The CEO attributed the exploit to a stolen private key, and promised to compensate users who were impacted.
Theme tags: Hack or scam
Tech tags: DeFi

A strawberry-colored iMac from 2000The strawberry iMac being auctioned along with the Wikipedia edit NFT (attribution)
Wales announced he would be auctioning an NFT of a website representing the first edit to Wikipedia. This was not taken well by some in the Wikimedia communities—some felt he was misusing Wikipedia to advertise a commercial opportunity for himself that benefits the Wikimedia movement in no way, others felt that NFTs and the artificial scarcity intrinsic to the idea are antithetical to the Wikimedia ideology. Wales is also auctioning off a strawberry-colored iMac (pictured) he used to work on the site, and most people seem to agree that is pretty cool. The NFT ultimately sold for $750,000; the iMac went for $187,500.
Theme tags: Bad idea
Blockchain tags: Blockchain: Ethereum
Tech tags: NFT

A platform called "CODEX" announced that they intend to "upgrade the digital book market industry to Web3". This, apparently, involves artificially limiting the number of copies of books that can be distributed, using technology that is definitely not just a worse version of DRM.
Theme tags: Bad idea
Blockchain tags: Blockchain: Flow

BadgerDAO logo, a pixel-art badger face on an orange-yellow backgroundBadger DAO logo (attribution)
A hacker was able to use a compromised Cloudflare API key to inject malicious code into the BadgerDAO platform via Cloudflare Workers. They then siphoned currency of various kinds, equivalent to approximately $120 million, out of user accounts over approximately two weeks before being discovered.
Theme tags: Hack or scam
Tech tags: DAO, DeFi, cryptocurrency

A cream-colored ape with a green army-style hat, an eye patch, a bandolier, and a party horn.Bored Ape #5977 (attribution)
Although friesframe had transferred some of his valuable NFTs to cold storage (a crypto wallet not connected to the Internet), he had been waiting for gas fees to come down before transferring more. In that period, his hot wallet was hacked, and a Bored Ape NFT and several others were stolen.
Theme tags: Hack or scam
Blockchain tags: Blockchain: Ethereum
Tech tags: NFT

A hacker stole $31 million from the liquidity pool provider MonoX by exploiting a bug in their smart contract software that allowed them to exchange a token for itself and artificially inflate the price. MonoX took the classic approach of those burned by crypto issues, and tried to get the cash back by... asking nicely.
Theme tags: Bug, Hack or scam
Blockchain tags: Blockchain: Bitcoin
Tech tags: DeFi

Developers launched a memecoin called "Unvaxxed Sperm", hoping to make a buck while also recruiting for their anti-vaccine group. The name is based on the belief that in the future, sperm (and eggs) from unvaccinated individuals will have enormous monetary value, which is based on the false belief that COVID-19 vaccines render people infertile. The group also promised to make a "pureblood" version of Tinder for the unvaccinated, and create a DAO to allow investors to crowdsource decisions on which anti-vaccine groups and individuals are worthy of their donations.
Theme tags: Bad idea
Tech tags: DAO, cryptocurrency

A chart of the value of SDOG, showing a huge crashSDOG value crashing after the buyback (attribution)
SnowdogDAO creators say they didn't rugpull, but that the coin plummeting over 90% was a "game-theory experiment" that went wrong. The project was intended to only last for eight days, and when the developers began the planned buyback of SDOG tokens, value crashed. The developers never made it clear to the community that only 7% of tokens could be sold above market price before the buyback, and hundreds of people lost most of their funds. Three addresses made between $3.3 and $10 million from the buyback, and many believe they belong to people who are connected to the development team. In total, about $30 million was lost.
Theme tags: Rug pull, Shady business
Blockchain tags: Blockchain: Avalanche
Tech tags: DAO, cryptocurrency