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Atlantic Computer SystemsCybersecurity company in Alum Rock, CA

Atlantic Computer Systems is a cybersecurity company in Alum Rock, CA, ranked #25 of 251 cybersecurity companies in Alum Rock and rated 5.0 from 13 Google reviews. Open Monday to Friday.

Facts here come from public sources and the firm itself. Confirm certifications, insurance and contract terms with the firm before you sign.

Alum Rock, CAUpdated 0 paid placements in any rankingHow we rank

Call (650) 300-7557Website ↗

Key facts

Key facts about Atlantic Computer Systems
Phone(650) 300-7557
Websiteatlanticcomputersystems.com
HoursMonday to Friday: 8 AM – 5 PM
Google rating5.0 from 13 Google reviews

Services

Each service shows the evidence we matched it on.

  • Cybersecuritymain serviceGoogle main category
  • Managed IT Servicesadditional Google category
  • IT Consultingadditional Google category

Service area

Serves Alum Rock and 12 towns within 75 miles: San Lorenzo, Cherryland, Foster City, Hayward, Redwood Shores, Ashland, Castro Valley, San Leandro, Belmont, Union City, San Carlos and Fairview.

Based in Alum Rock, CAView on map

Opening hours

Opening hours for Atlantic Computer Systems
DayHours
Monday8 AM – 5 PM
Tuesday8 AM – 5 PM
Wednesday8 AM – 5 PM
Thursday8 AM – 5 PM
Friday8 AM – 5 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Questions about Atlantic Computer Systems

How is Atlantic Computer Systems ranked in Alum Rock?

Atlantic Computer Systems is ranked #25 of 251 cybersecurity companies in Alum Rock by IFR Score, with 56 out of 100 as of November 2026. The score weighs reputation, review volume, recency, availability, service focus, proximity, claimed profile, partnered and client reviews. No business can pay to change its rank.

What are Atlantic Computer Systems’ hours?

Atlantic Computer Systems is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Atlantic Computer Systems serve?

Serves Alum Rock and 12 towns within 75 miles: San Lorenzo, Cherryland, Foster City, Hayward, Redwood Shores, Ashland, Castro Valley, San Leandro, Belmont, Union City, San Carlos and Fairview. The list is based on the business's location and the usual service radius for cybersecurity. Confirm your address is covered when you call.

What do Google reviews say about Atlantic Computer Systems?

Atlantic Computer Systems has a rating of 5.0 from 13 Google reviews. The IFR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Atlantic Computer Systems?

Call Atlantic Computer Systems on (650) 300-7557. Its website is linked in the key facts on this page. Ask for a written scope and quote before any work starts.

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Compare nearby cybersecurity companies

Atlantic Computer Systems compared with nearby businesses
BusinessRankIFR ScoreGoogle ratingSaturdaySundayDistance away
Atlantic Computer Systems (this business)—565.0 (13)NoNo
EthicalHat Cyber Security#23565.0 (3)YesYes12.9 mi
SentinelOne#24563.9 (18)NoNo15.8 mi

See all 251 ranked cybersecurity companies in Alum Rock