62/100IFR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 135 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Best Cybersecurity Companies in Charleston, SC (2026)
46 cybersecurity companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Charleston: ADVYON, IFR Score 62/100; 5.0★ from 135 Google reviews; open 7 days a week.
- 9
Most-reviewed: The Computer Guyz IT Services, 139 Google reviews at 4.7★, the most of 46 ranked; ranked #9.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
46 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 46 rated IT firms.
Top 10 cybersecurity companies in Charleston at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | ADVYON | 62 | 5.0★ (135) | Summerville, 17 mi away | Sat · Sun · Evenings | Overall |
| 2 | TeamLogic IT | 62 | 5.0★ (13) | North Charleston, 8 mi away | Sat · Sun | — |
| 3 | TeamLogic IT | 62 | 5.0★ (24) | Charleston | — | — |
| 4 | Cantey Tech Consulting - Charleston Managed IT Services Company | 61 | 4.8★ (76) | North Charleston, 5 mi away | Sat · Sun · Evenings | — |
| 5 | Cyber Husky - Managed IT Services Charleston | 61 | 5.0★ (25) | North Charleston, 7 mi away | Sat · Sun · Evenings | — |
| 6 | DocuSystems | 60 | 4.7★ (24) | North Charleston, 9 mi away | — | — |
| 7 | A Geek To Go! | 59 | 4.4★ (58) | Charleston | Sat · Sun · Evenings | — |
| 8 | e Systems Solutions | Managed IT Services & IT Support | 58 | 5.0★ (29) | Charleston | Sat · Sun · Evenings | — |
| 9 | The Computer Guyz IT Services | 58 | 4.7★ (139) | Charleston | — | Most reviews |
| 10 | Will Fixit Solutions | 58 | 4.9★ (115) | Mount Pleasant, 7 mi away | — | — |
The 46 best cybersecurity companies in 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.
#2 TeamLogic IT
Based in North Charleston, 8 mi away
62/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 13 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
#3 TeamLogic IT
Based in Charleston
62/100IFR ScoreRanked #3 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in North Charleston, 5 mi away
61/100IFR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 76 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in North Charleston, 7 mi away
61/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 25 Google reviews, listed on Google as “Computer support and services”.
Based on 8 of 9 factors; recency not yet collected.
#6 DocuSystems
Based in North Charleston, 9 mi away
60/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.7★ from 24 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
59/100IFR ScoreRanked #7 because of its Google rating and review volume: 4.4★ from 58 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
58/100IFR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 29 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
58/100IFR ScoreRanked #9 because of its Google rating and review volume: 4.7★ from 139 Google reviews, the most in Charleston.
Based on 8 of 9 factors; recency not yet collected.
Based in Mount Pleasant, 7 mi away
58/100IFR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 115 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#11 The 20 MSP
Based in Charleston
58/100IFR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 24 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#12 AT-NET Services
Based in North Charleston, 7 mi away
57/100IFR ScoreRanked #12 because of its Google rating and review volume: 4.8★ from 26 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#13 1FORCE
Based in Hilton Head Island, 59 mi away
57/100IFR ScoreRanked #13 because of its Google rating and service focus: 5.0★ from 20 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Bluffton, 65 mi away
56/100IFR ScoreRanked #14 because of its Google rating and service focus: 4.6★ from 20 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
#15 DartPoints
Based in Ladson, 16 mi away
55/100IFR ScoreRanked #15 because of its Google rating and review volume: 4.7★ from 21 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
55/100IFR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 32 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#17 NetCertPro
Based in Goose Creek, 29 mi away
55/100IFR ScoreRanked #17 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
#18 ComSurv
Based in Goose Creek, 18 mi away
55/100IFR ScoreRanked #18 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
#19 SAMTECH
Based in North Charleston, 14 mi away
55/100IFR ScoreRanked #19 because of its Google rating and review volume: 4.7★ from 44 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in North Charleston, 11 mi away
55/100IFR ScoreRanked #20 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
55/100IFR ScoreRanked #21 because of its Google rating and review volume: 4.6★ from 11 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Bath Beach, 48 mi away
55/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Goose Creek, 11 mi away
54/100IFR ScoreRanked #23 because of its Google rating and service focus: 5.0★ from 10 Google reviews, listed on Google as “Computer repair service”.
Based on 8 of 9 factors; recency not yet collected.
#24 Connected HHI
Based in Hilton Head Island, 60 mi away
54/100IFR ScoreRanked #24 because of its Google rating and service focus: 5.0★ from 10 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Charleston
54/100IFR ScoreRanked #25 because of its Google rating and review volume: 5.0★ from 17 Google reviews.
Based on 7 of 9 factors; recency and availability not yet collected.
All 46 cybersecurity companies
#1 to #25 are shown in full above. Here are #26 to #46, in IFR Score order; each links to its profile.
| Rank | Business | IFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | TotalBC, Inc. | 54 | 4.6★ (10) | 10 mi |
| 27 | Commit of Charleston, IT Consultants | 54 | 5.0★ (28) | In Charleston |
| 28 | CMIT Solutions | 53 | 4.9★ (36) | 21 mi |
| 29 | Gator IT Solutions | 52 | 5.0★ (6) | 11 mi |
| 30 | Complete | 52 | 4.7★ (23) | 65 mi |
| 31 | Kotori Technologies, LLC | 51 | 4.7★ (28) | 22 mi |
| 32 | NetTec NSI, LLC | 51 | 5.0★ (16) | In Charleston |
| 33 | barricade cyber solutions | 51 | 4.5★ (4) | 22 mi |
| 34 | Novatech | 50 | 4.8★ (15) | 18 mi |
| 35 | MillerWilson Consulting | 50 | 5.0★ (12) | 10 mi |
| 36 | e-vos | 50 | 5.0★ (9) | In Charleston |
| 37 | BuenaVista Information Systems | 50 | 5.0★ (12) | 13 mi |
| 38 | AAT Computer Repair and Upgrades | 50 | 2.5★ (4) | In Charleston |
| 39 | SNS Technologies - Managed IT Services Company | 49 | 5.0★ (31) | 65 mi |
| 40 | HHI Computer Guys | 49 | 4.6★ (29) | 59 mi |
| 41 | Atlas Technologies, Inc. | 48 | 4.5★ (8) | 9 mi |
| 42 | Forensic Recovery, LLC | 48 | 5.0★ (10) | 50 mi |
| 43 | Meridian Automation & Communication Inc | 48 | 5.0★ (6) | 13 mi |
| 44 | SkyView Technology, Inc | 46 | 5.0★ (3) | 7 mi |
| 45 | Y'all Tech | 45 | 5.0★ (10) | 65 mi |
| 46 | TechHeads Technology Services, Inc. | 45 | 4.6★ (9) | 65 mi |
Also serving Charleston
20 more cybersecurity companies within 75 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| ANC Group Charleston IT Support Company | In Charleston | |
| Bluetowne | 5.0★ (5) | In Charleston |
| Branch Technologies | 5.0★ (37) | In Charleston |
| Charleston AI | 4.8★ (54) | In Charleston |
| Charleston Technology Group | 5.0★ (26) | In Charleston |
| Computer Consultants Group, Inc. | 4.8★ (20) | In Charleston |
| CyberGuard360 | 5.0★ (2) | In Charleston |
| Digital Care Technology Partner & Services | 5.0★ (6) | In Charleston |
| e-Coast Systems | 4.9★ (30) | In Charleston |
| Electric Red, Inc. | 5.0★ (2) | In Charleston |
| Ghost Tech Solutions | 5.0★ (3) | In Charleston |
| IMS Solutions Group - Charleston | In Charleston | |
| Levifi Charleston | 5.0★ (103) | In Charleston |
| Portside Technology | 4.9★ (44) | In Charleston |
| ProTecht Solutions Partners | In Charleston | |
| SmartFish | In Charleston | |
| SNAP Integrations | 4.9★ (40) | In Charleston |
| Spartan Cybersecurity | In Charleston | |
| Teleco of Charleston | 5.0★ (2) | In Charleston |
| UNG | 5.0★ (1) | In Charleston |
How we ranked Charleston cybersecurity companies
We scored 46 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.
| Factor | Weight | Computed from | In Charleston data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a cybersecurity company
- Ask whether monitoring is staffed around the clock by the firm itself or by a partner.
- Ask for a sample assessment or penetration-test report with client details removed.
- Check experience with your industry’s rules (for example HIPAA, PCI DSS or CMMC).
- Ask what the firm does in the first hour of an incident, and whether that is in the contract.
- Ask for two or three references from clients of your size and industry, and call them.
- 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 Charleston: frequently asked questions
Who is the best cybersecurity company in Charleston?
By IFR Score, the highest-ranked cybersecurity company in Charleston, SC is ADVYON with an IFR Score of 62/100. 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 46 cybersecurity companies on nine factors, last updated November 9, 2026.
How many cybersecurity companies are there in Charleston?
ITFirmsRanked ranks 46 cybersecurity companies serving Charleston, SC. 12 of them are based in Charleston; the rest serve it from nearby towns. Another 20 within 75 mi are listed but not ranked yet. Counts are as of November 2026.
Which cybersecurity companies in Charleston work on weekends?
18 of 46 ranked cybersecurity companies post Saturday hours and 15 post Sunday hours. The highest-ranked open Saturdays are ADVYON (#1), TeamLogic IT (#2) and Cantey Tech Consulting - Charleston Managed IT Services Company (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Charleston cybersecurity companies have?
The median Google rating among 46 rated cybersecurity companies in Charleston is 5.0★, with a median of 17 reviews. The Computer Guyz IT Services has the most, 139 reviews, and ranks #9. 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 Charleston count in this ranking?
Yes, if they are within 75 mi of the 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 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 Charleston
- November 2026: IFR Scores recalculated for 46 cybersecurity companies serving Charleston.
More cybersecurity companies and Charleston pages
Cybersecurity companies near Charleston
- Cybersecurity companies in Mount Pleasant, SC47 ranked
- Cybersecurity companies in North Charleston, SC47 ranked
- Cybersecurity companies in Hanahan, SC50 ranked
- Cybersecurity companies in Goose Creek, SC52 ranked
- Cybersecurity companies in Ladson, SC49 ranked
- Cybersecurity companies in Summerville, SC49 ranked
- Cybersecurity companies in Beaufort, SC57 ranked
- Cybersecurity companies in Port Royal, SC57 ranked
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