Utilize the input text as a context reference, choose the right relationship between Tencent and WeChat from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Tencent said on its official WeChat blog that the security flaw affects WeChat 6.2.5, an old version of its popular chatting app, and that newer versions were unaffected.

Answer: subsidiary