Contact · East 86th St, New York, NY

Most Of This Starts With A Short Email.

No sales sequence, no “quick sync” invites three days in a row. Tell us what’s on your mind — a customer questionnaire, a SOC 2 date, a link someone shouldn’t have clicked — and a tester, not a BDR, writes back within one business day.

Routing

Skip The Phone Tree

Six reasons people usually get in touch, and the quickest way in for each. Find your row — or ignore the whole table and just call. Either way, the person who answers can actually scope a test.

Which way to contact Halcyon, depending on your situation
If this is youBest way inWhat happens next
01A customer just sent you a 200-row security questionnaire The form below Pick “Questionnaire help”

A reply within one business day telling you which rows a pen test or audit genuinely covers — and which ones you can answer honestly today.

02You need a pen test report by a specific date Email with the date Put the deadline in the subject line

Free 30-minute scoping call, NDA first if you want one. Then a fixed quote and a calendar that works backwards from your date.

03Something looks wrong right now Call (718) 360-0994 Don’t wait on a form

During office hours you’ll reach a tester. After hours, leave a voicemail — and also ring the breach line on your cyber-insurance policy, since many carriers want to hear first.

04Procurement wants a W-9, an NDA or MSA redlines Email “vendor docs” Attach their template if they have one

Paperwork back the same week. We’re happy to sign your NDA instead of ours — we’d rather start testing than trade redlines.

05You’d rather do the testing than get tested Email the careers inbox Yes, it’s the same inbox

Send what you’ve broken (legally): CTF writeups, a CVE, a blog post, a homelab you’re proud of. Résumés optional, curiosity required.

06You’re planning next year’s security budget The form, no rush Pick “Not sure yet”

Rough ranges for a pen test, audit or IR plan at your size, plus the three or four questions that actually move the price.

What happens next

After You Hit Send

  1. Same or next business day

    A Reply From A Tester

    Someone who runs engagements reads your note and answers it — with two or three times for a call, or a straight answer if a call isn’t needed.

  2. 30 minutes, free

    The Scoping Call

    NDA signed first if you’d like. We ask what’s facing the internet, who’s asking for the report, and what’s actually keeping you up.

  3. In writing

    One Fixed Quote

    Line by line, with the math showing. Bigger scope, bigger number — never a vague hourly estimate that creeps.

  4. Your move

    Sign, Sit On It, Or Shop It

    Take the quote to another firm if you want. We won’t drip-email you or “just circle back.”

A lilac notepad with a handwritten note and a brass pen beside a closed laptop on an oak desk
Two sentences is plenty. We’ll ask the rest.

Tell Us What’s Going On

Nothing here commits you to anything.

Roughly what’s this about?

Please don’t paste passwords, API keys or live customer data here. If we need anything sensitive, we’ll set up an encrypted channel first.

Prefer email? careers@halcyoncybersecurity.com

Office hours, Eastern

When Someone Picks Up

The solid bar is a person at a desk. The faded stretch is evenings by appointment — handy when your engineers can only meet after standup, or once the West Coast is online.

  1. MonToday

    9:30am–4:30pmEvenings by appointment

  2. Tue

    9:30am–4:30pmEvenings by appointment

  3. Wed

    9:30am–4:30pmEvenings by appointment

  4. Thu

    9:30am–4:30pmEvenings by appointment

  5. Fri

    9:30am–4:30pmEvenings by appointment

  6. Sat

    ClosedEmail anyway — first in line Monday

  7. Sun

    ClosedEmail anyway — first in line Monday

  • A tester at a desk
  • Evenings, by appointment
  • Right now in New York

Testing windows are their own thing: if your scope letter says overnight or weekend, that’s when we test — even though the phone sleeps.

A quiet Upper East Side street at dawn with prewar brick buildings and a green door left slightly open
East 86th, early. The quiet part of the day.

In person

East 86th, Between First & Second

Most of the work happens over screen shares, so the office runs by appointment. Book a time and we’ll come down to meet you — kickoffs and tabletop drills are better with coffee anyway.

315 east 86 st, New York, NY 10028
LEXINGTON 3RD AVE 2ND AVE 1ST AVE YORK E 86 ST 4·5·6 Q Halcyon ~2 min from the Q
  • 86 St on the Second Avenue lineExit toward 86th, walk east — it’s the closest stop.

  • 86 St at Lexington AvenueAbout a ten-minute walk east along 86th.

  • 86th Street crosstownHandy from the West Side through the park.

  • First and Second Avenue busesLocal and Select Bus Service both stop at 86th.