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Elon Musk spent his Friday reposting criticism of competitors after the launch of the XChat app, a stand-alone messaging option for X users. “Signal, WhatsApp, Telegram, and iMessage all have serious security problems,” read a message Musk reposted, in part. “XChat is the only secure, encrypted messaging app.” Encryption experts I spoke with in the lead-up to this launch expressed cautious skepticism about XChat’s execution and defended other communication platforms, like Signal, as solid choices.

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The best iPhone charger depends on several factors. Are you topping off your battery on the go? Do you want to charge your iPhone as quickly as possible? Are you charging it overnight on your nightstand? The best gear recommendation is going to change with the situation. Luckily, the WIRED Reviews team tests iPhone chargers in the field all year long. There's not a day that goes by that at least one of us is not assessing at least one iPhone charger. I've gathered up our favorite picks for every scenario.

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Ace is a robot that aims high: It wants to become the world champion of table tennis. It was developed by Sony AI researchers who, in a new study published in Nature, have shown how this robot, equipped with artificial intelligence, has faced some high-level athletes, holding its own in matches played according to the official rules of table tennis.

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As researchers and practitioners debate the impact that new AI models will have on cybersecurity, Mozilla said on Tuesday it used early access to Anthropic's Mythos Preview to find and fix 271 vulnerabilities in its new Firefox 150 browser release. Meanwhile, researchers identified a group of moderately successful North Korean hackers using AI for everything from vibe coding malware to creating fake company websites—stealing up to $12 million in three months.

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