Warframe's Vallis Undermind update introduced a new pseudo-syndicate with the new Solari NPC, Nightcap. Rather than an organization, this one is just about Nightcap the individual, and his research on ...

To earn Hex Syndicate Standing, you need to finish bounties from the bounty board, which will award some on completion. You can also look for items called Hex Treasures while playing through Bounties.