OpenAI says its upcoming Astra model can find and exploit previously unknown security flaws, so it is adding stronger safeguards before release. Astra will initially be limited to selected testers, while OpenAI monitors its activity and restricts capabilities to reduce the risk of misuse.

Lazarus-linked wallets moved about $30 million through Hyperliquid, converting Bitcoin into Ethereum and Solana before sending the funds across Ethereum, Solana and Tron. The assets eventually reached Kraken, KuCoin, LBank and other unidentified services, while the activity has increased scrutiny of how decentralised platforms handle potentially stolen or sanctioned funds.

Around 5,000 Dropbox accounts were compromised between 4 August and 21 August after attackers exploited a flaw in Lenovo ID email verification to access linked accounts. Files were viewed or downloaded in fewer than a third of the affected accounts, and Dropbox has since removed the Lenovo ID link and required passwords for access.

Strategy has resumed Bitcoin purchases after more than two months, buying 4,603 BTC for about $370 million at an average price of $80,318 per coin. The company now holds 845,050 BTC and has $6.71 billion in cash assets, while also repurchasing $152 million in STRC preferred shares.

MAS has proposed new stablecoin rules covering reserve backing, redemption, capital, disclosure and a ban on interest payments, while also considering stress tests and recovery plans for issuers.

South Korea will offer free, unlimited generative AI access to all 51 million residents, with services covering tasks such as medical appointments, housing and taxes.

LG Electronics has launched AI-Dol, a five-member virtual K-pop girl group, to promote its 2026 AI WashCombo washer-dryer and its laundry features.

Polygon Labs fixed several security vulnerabilities in its proof-of-stake network through the Austin and Kyoto hard forks before publicly disclosing the flaws. The issues could have crashed nodes, slowed block processing or exhausted validators’ resources, but Polygon said none were exploited on mainnet.

Cronos halted its blockchain after an attacker exploited Tectonic by manipulating the TONIC token price and draining up to $75 million, with around $60 million left trapped on the network. Crypto.com said its app and exchange were unaffected, while Cronos and Tectonic investigate the attack and decide how to recover the frozen funds.

Shinhan Financial Group has partnered with Visa to test stablecoin infrastructure, card settlements, AI-powered payments and B2B services in South Korea.