How can I hang an IKEA Stockholm mirror on a brick wall?
I used a D-ring (holds 7kg) with two holes then used a nut and bolt (m4*12mm) as shown in the blog and also a 12mm screw directly into the wood (I stopped screwing when I heard little creak).
I wasn't able to use a picture hook as it was a brick wall so used 2 of these sturdy plastic wall hooks (14x9mm) with wallplugs and screws (https://www.prowa-produkte.ch/collections/wandhaken/products/wandhaken-art-610?variant=30337743880258). 
The mirror doesn't hang quite flush there's a small 15mm gap at top and 8mm on the side in the middle. But it's almost perfect and looks very good to me