You can either enter through the lobby onto the 8th ground floor, or sneak in through the heavily guarded parking garage to a lower level, but since your target is on the 9th and top floor, its best just to walk in the front door. Be sure to look around before you leave, the there some hacking software stashed around, and a Multi-tool in the corner by the door under a box. That would involve a break-in of course, so choose which option suits you best. The simplest being just toss a frag grenade into their meeting. You need them to back off of looking into TF29, and there a couple ways to do this.

Move the debris and boxes aside near the television to find the gate, and open the gate using the code you were given. Once down in the sewers, keep moving past the homeless areas until you come to a large opening with a television of all things. Head over to the far corner of the district on the other side of town and look for a manhole to descend by The Music Box. At this point you can command they stop bad callbluff or inquire that you forgot where to meet - which will give you directions to the Davny district by the old church, and a code to get in the office. You can either start interrogating, stall or inquire. Hack the level 1 laptop and check out the emails to confirm this hacker works for the publication. The laptop appears to be owned by Samizdat, the same name as the hacker and anti-establishment newspaper seen in various places.

The side room holds a table with lots of junk, some hacking software stashed in the corner, and a wall with a web of conspiracies all pointing at Praha Dovoz. The place appears to be empty, and largely unfurnished, which is a bit unsettling. Head to the apartments at 33 Hlavni, not far from TF29, and get to the top floor of the apartments to find number Depending on how you want to approach the place, you can either hack the level 2 lock on the door, or simply slip in through the window on the balcony.

Deus ex find the source of the hack