Bloomberg SoftBank Group Corp. is leading a $502 million investment in Improbable Worlds Ltd., a London-based virtual reality startup, in one of the UK’s largest venture capital deals. The valuation wasn’t disclosed. But SoftBank is buying a non-controlling stake, which would mean Improbable is worth at least $1.04 billion. The deal would rank as the fifth-largest UK venture investment in …

Bloomberg The cyber-attack that spread rapidly around the globe was stifled when a security researcher disabled a key mechanism used by the worm to spread, but experts said the hackers were likely to return as many computers remain at risk. Hackers can still gain easy access to personal computers that lack a security update issued in March by Microsoft Corp. …

Bloomberg Samsung Electronics Co. and Intel Corp. weighed in with their own gripes about Qualcomm Inc. while cheering on the US Federal Trade Commission’s lawsuit accusing the chipmaker of trying to corner the market for semiconductors used in smartphones. The South Korean company, one of Qualcomm’s largest customers, and Intel, one of its biggest competitors, filed arguments in support of …