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Best Cybersecurity Companies in North Charleston, SC (2026)

47 cybersecurity companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in North Charleston: ADVYON, IFR Score 63/100; 5.0★ from 135 Google reviews; open 7 days a week.

  2. 12

    Most-reviewed: The Computer Guyz IT Services, 139 Google reviews at 4.7★, the most of 47 ranked; ranked #12.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

47 North Charleston cybersecurity companies are ranked here by IFR Score, from nine published factors. 18 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 5.0★ across 47 rated IT firms.

Most of this list also appears on the Cybersecurity companies in Charleston ranking. See Cybersecurity companies in Charleston

Top 10 cybersecurity companies in North Charleston at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 cybersecurity companies in North Charleston at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1ADVYON635.0★ (135)Summerville, 12 mi awaySat · Sun · EveningsOverall
2TeamLogic IT625.0★ (13)North CharlestonSat · Sun—
3TeamLogic IT615.0★ (24)Charleston, 5 mi away——
4Cyber Husky - Managed IT Services Charleston615.0★ (25)North CharlestonSat · Sun · Evenings—
5Cantey Tech Consulting - Charleston Managed IT Services Company614.8★ (76)North CharlestonSat · Sun · Evenings—
6DocuSystems614.7★ (24)North Charleston——
7A Geek To Go!584.4★ (58)Charleston, 8 mi awaySat · Sun · Evenings—
8e Systems Solutions | Managed IT Services & IT Support585.0★ (29)Charleston, 3 mi awaySat · Sun · Evenings—
9AT-NET Services574.8★ (26)North CharlestonSat · Sun · Evenings—
10Will Fixit Solutions574.9★ (115)Mount Pleasant, 9 mi away——

The 47 best cybersecurity companies in North Charleston, ranked

Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Scores below: based on 8 of 9 factors; recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in North Charleston

    #1 ADVYON

    Based in Summerville, 12 mi away

    63/100IFR Score

    Ranked #1 because of its Google rating and review volume: 5.0★ from 135 Google reviews.

    • 5.0★ from 135 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    100 Seven Oaks Ln, Summerville, SC 29485
    View profile for ADVYON(843) 324-5824

  2. #2 TeamLogic IT

    Based in North Charleston

    62/100IFR Score

    Ranked #2 because of its Google rating and service focus: 5.0★ from 13 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 13 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun 11 AM–4 PM
    Address
    1058 E Montague Ave Ste 200, North Charleston, SC 29405
    View profile for TeamLogic IT(843) 501-9525

  3. #3 TeamLogic IT

    Based in Charleston, 5 mi away

    61/100IFR Score

    Ranked #3 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Fri 7:30 AM–5:30 PM · Sat–Sun closed
    Address
    1904 Savannah Hwy, Charleston, SC 29407
    View profile for TeamLogic IT(843) 823-7003

  6. #6 DocuSystems

    Based in North Charleston

    61/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.7★ from 24 Google reviews, listed on Google as “Computer security service”.

    • 4.7★ from 24 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    5532 N Rhett Ave, North Charleston, SC 29406
    View profile for DocuSystems(843) 856-9191

  7. #7 A Geek To Go!

    Based in Charleston, 8 mi away

    58/100IFR Score

    Ranked #7 because of its Google rating and review volume: 4.4★ from 58 Google reviews.

    • 4.4★ from 58 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    900 Cotton House Rd, Charleston, SC 29412
    View profile for A Geek To Go!(843) 557-9378

  9. #9 AT-NET Services

    Based in North Charleston

    57/100IFR Score

    Ranked #9 because of its Google rating and review volume: 4.8★ from 26 Google reviews.

    • 4.8★ from 26 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    4055 Faber Pl Dr #112, North Charleston, SC 29405
    View profile for AT-NET Services(844) 506-2116

  11. #11 The 20 MSP

    Based in Charleston, 6 mi away

    57/100IFR Score

    Ranked #11 because of its Google rating and review volume: 5.0★ from 24 Google reviews.

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    164 Market St, Charleston, SC 29401
    View profile for The 20 MSP(877) 344-9658

  13. #13 1FORCE

    Based in Hilton Head Island, 61 mi away

    56/100IFR Score

    Ranked #13 because of its Google rating and service focus: 5.0★ from 20 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 20 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    1 Cardinal Rd Ste 7, Hilton Head Island, SC 29926
    View profile for 1FORCE(888) 308-2594

  14. #14 SAMTECH

    Based in North Charleston

    56/100IFR Score

    Ranked #14 because of its Google rating and review volume: 4.7★ from 44 Google reviews.

    • 4.7★ from 44 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat 10 AM–5 PM · Sun closed
    Address
    2080 Northbrook Blvd, North Charleston, SC 29406
    View profile for SAMTECH(843) 824-1668

  15. #15 DartPoints

    Based in Ladson, 11 mi away

    56/100IFR Score

    Ranked #15 because of its Google rating and review volume: 4.7★ from 21 Google reviews.

    • 4.7★ from 21 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    8480 Palmetto Commerce Pkwy, Ladson, SC 29456
    View profile for DartPoints(855) 828-3278

  16. #16 Tandem Cyber Solutions

    Based in North Charleston

    56/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    6650 Rivers Ave, North Charleston, SC 29406
    View profile for Tandem Cyber Solutions(843) 309-3058

  17. #17 NetCertPro

    Based in Goose Creek, 24 mi away

    56/100IFR Score

    Ranked #17 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 7 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    109 S Live Oak Dr, Moncks Corner, SC 29461
    View profile for NetCertPro(843) 606-6255

  18. #18 KML Computer Services

    Based in Bluffton, 66 mi away

    56/100IFR Score

    Ranked #18 because of its Google rating and service focus: 4.6★ from 20 Google reviews, listed on Google as “Computer security service”.

    • 4.6★ from 20 Google reviews
    Hours
    Mon–Fri 7:30 AM–7 PM · Sat–Sun closed
    Address
    4454 Bluffton Parkway Ste 105, Bluffton, SC 29910
    View profile for KML Computer Services(843) 715-9800

  19. #19 ComSurv

    Based in Goose Creek, 12 mi away

    55/100IFR Score

    Ranked #19 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 5 Google reviews
    Hours
    Mon 8 AM–5 PM · Tue 9:30 AM–5 PM · Wed–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for ComSurv(843) 576-1422

  23. #23 TotalBC, Inc.

    Based in Hanahan, 4 mi away

    54/100IFR Score

    Ranked #23 because of its Google rating and service focus: 4.6★ from 10 Google reviews, listed on Google as “Computer support and services”.

    • 4.6★ from 10 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    1007 Bankton Cir Ste C, Hanahan, SC 29410
    View profile for TotalBC, Inc.(843) 744-0150

  24. #24 Connected HHI

    Based in Hilton Head Island, 62 mi away

    54/100IFR Score

    Ranked #24 because of its Google rating and service focus: 5.0★ from 10 Google reviews, listed on Google as “Computer security service”.

    • 5.0★ from 10 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    400 Main St #200h, Hilton Head Island, SC 29926
    View profile for Connected HHI(843) 715-9894

How we ranked North Charleston cybersecurity companies

We scored 47 North Charleston cybersecurity companies on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.

Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn North Charleston data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a cybersecurity company

  1. Ask whether monitoring is staffed around the clock by the firm itself or by a partner.
  2. Ask for a sample assessment or penetration-test report with client details removed.
  3. Check experience with your industry’s rules (for example HIPAA, PCI DSS or CMMC).
  4. Ask what the firm does in the first hour of an incident, and whether that is in the contract.
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask a cybersecurity company

  • Is your security monitoring staffed 24/7, and by whom?
  • Which frameworks do you assess against?
  • What do your reports include, and do you re-test after we fix the findings?
  • Do you handle incident response yourselves, and do you work with cyber insurers?
  • What access will you need to our systems, and how is it controlled and logged?
  • Which certifications do the people doing the work hold?

Terms explained

MSP (managed service provider)
A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
Co-managed IT
An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
Break-fix
IT support paid per incident or per hour, with no monthly agreement.
SLA (service-level agreement)
The contract terms for response and resolution times, uptime and support hours.
Help desk
The support line staff call or email for IT problems.
RMM
Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
vCIO
A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
MSSP
A managed security service provider: a firm that monitors and manages security tools around the clock.
EDR / MDR
Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
MFA
Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
Penetration test
An authorised, simulated attack on your systems to find weaknesses before criminals do.
SOC 2
An independent auditor’s report (AICPA standard) on a service provider’s security controls.

Cybersecurity companies in North Charleston: frequently asked questions

Who is the best cybersecurity company in North Charleston?

By IFR Score, the highest-ranked cybersecurity company in North Charleston, SC is ADVYON with an IFR Score of 63/100. It has 5.0★ from 135 Google reviews. It is open 7 days a week. TeamLogic IT (#2) and TeamLogic IT (#3) follow. We ranked 47 cybersecurity companies on nine factors, last updated November 9, 2026.

How many cybersecurity companies are there in North Charleston?

ITFirmsRanked ranks 47 cybersecurity companies serving North Charleston, SC. 7 of them are based in North Charleston; the rest serve it from nearby towns. Counts are as of November 2026.

Which cybersecurity companies in North Charleston work on weekends?

18 of 47 ranked cybersecurity companies post Saturday hours and 15 post Sunday hours. The highest-ranked open Saturdays are ADVYON (#1), TeamLogic IT (#2) and Cyber Husky - Managed IT Services Charleston (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do North Charleston cybersecurity companies have?

The median Google rating among 47 rated cybersecurity companies in North Charleston is 5.0★, with a median of 17 reviews. The Computer Guyz IT Services has the most, 139 reviews, and ranks #12. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank cybersecurity companies?

Each cybersecurity company gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.

Do cybersecurity companies outside North Charleston count in this ranking?

Yes, if they are within 75 mi of the North Charleston city center, our service radius for cybersecurity companies. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.

Can cybersecurity companies pay to rank higher on ITFirmsRanked?

No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.

What does a cybersecurity company do?

Cybersecurity companies assess and protect a business’s systems and data: security monitoring, endpoint protection, penetration testing, compliance support and incident response.

How are cybersecurity companies in North Charleston ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does cybersecurity, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

Do we need a cybersecurity firm if we already have an IT provider?

Sometimes. Many IT providers include basic security tools; a security firm adds specialist work such as 24/7 monitoring, penetration tests, compliance audits and incident response. Ask your IT provider what they cover and where they would bring in a specialist.

What is the difference between a security assessment and a penetration test?

An assessment reviews your policies, settings and controls against a framework. A penetration test is an authorised, simulated attack that tries to exploit weaknesses. Both end with a written report and a list of fixes.

Can a cybersecurity firm help with compliance?

Many help organisations prepare for requirements such as HIPAA, PCI DSS, CMMC or SOC 2. They can advise and assess, but only an independent auditor issues a SOC 2 report, and compliance is ultimately your responsibility.

Update log for North Charleston

  1. November 2026: IFR Scores recalculated for 47 cybersecurity companies serving North Charleston.

More cybersecurity companies and North Charleston pages