Skip to content

Best Cybersecurity Companies in Clemson, SC (2026)

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

The short answer

  1. 1

    Best overall in Clemson: One Click Fix Managed Services and Security, IFR Score 63/100; 5.0★ from 139 Google reviews; open 7 days a week.

  2. 12

    Most-reviewed: Asheville Computer Co - Managed Business IT Services, 261 Google reviews at 4.9★, the most of 75 ranked; ranked #12.

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

75 Clemson cybersecurity companies are ranked here by IFR Score, from nine published factors. 14 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 5.0★ across 75 rated IT firms.

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

Top 10 cybersecurity companies in Clemson at a glance

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

Top 10 cybersecurity companies in Clemson at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1One Click Fix Managed Services and Security635.0★ (139)Asheville, 66 mi awaySat · SunOverall
2ANC Group - Greenville Managed IT Services Company595.0★ (104)Greenville, 30 mi awaySat · Sun · Evenings—
3Eaton Corporation574.0★ (38)Greenwood, 54 mi away——
4IntegriCom575.0★ (34)Gainesville, 62 mi away——
5AT-NET Services565.0★ (48)Greenville, 27 mi awaySat · Sun · Evenings—
6Cyber Solutions Inc. | Managed IT Services and Cybersecurity Company564.9★ (60)Anderson, 16 mi away——
7CMIT Solutions of Greenville565.0★ (16)Greenville, 30 mi away——
8AT-NET Services555.0★ (41)Greer, 37 mi awaySat · Sun · Evenings—
9Computer-Tech-Services554.6★ (242)Greenville, 29 mi awayEvenings—
10LinkIT Inc555.0★ (11)Simpsonville, 34 mi away——

The 75 best cybersecurity companies in Clemson, 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.

  3. #3 Eaton Corporation

    Based in Greenwood, 54 mi away

    57/100IFR Score

    Ranked #3 because of its Google rating and service focus: 4.0★ from 38 Google reviews, listed on Google as “Computer security service”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.0★ from 38 Google reviews
    Address
    1520 Emerald Rd, Greenwood, SC 29646
    View profile for Eaton Corporation(864) 223-2311

  4. #4 IntegriCom

    Based in Gainesville, 62 mi away

    57/100IFR Score

    Ranked #4 because of its Google rating and service focus: 5.0★ from 34 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 34 Google reviews
    Hours
    Mon–Fri 7 AM–6 PM · Sat–Sun closed
    Address
    329 Oak St Ste 204, Gainesville, GA 30501
    View profile for IntegriCom(770) 215-4040

  5. #5 AT-NET Services

    Based in Greenville, 27 mi away

    56/100IFR Score

    Ranked #5 because of its Google rating and review volume: 5.0★ from 48 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 48 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    355 S Main St 1st Floor Suite 108B, Greenville, SC 29601
    View profile for AT-NET Services(844) 506-2116

  7. #7 CMIT Solutions of Greenville

    Based in Greenville, 30 mi away

    56/100IFR Score

    Ranked #7 because of its Google rating and service focus: 5.0★ from 16 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 16 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    15 Halton Green Way Suite 200, Greenville, SC 29607
    View profile for CMIT Solutions of Greenville(864) 322-2948

  8. #8 AT-NET Services

    Based in Greer, 37 mi away

    55/100IFR Score

    Ranked #8 because of its Google rating and review volume: 5.0★ from 41 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 41 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    142 W Phillips Rd a, Greer, SC 29650
    View profile for AT-NET Services(844) 506-2116

  9. #9 Computer-Tech-Services

    Based in Greenville, 29 mi away

    55/100IFR Score

    Ranked #9 because of its Google rating and review volume: 4.6★ from 242 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 242 Google reviews
    Hours
    Mon–Fri 10 AM–7 PM · Sat–Sun closed
    Address
    1211 Laurens Rd Ste A, Greenville, SC 29607
    View profile for Computer-Tech-Services(864) 242-9275

  10. #10 LinkIT Inc

    Based in Simpsonville, 34 mi away

    55/100IFR Score

    Ranked #10 because of its Google rating and service focus: 5.0★ from 11 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 11 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    903 Harness Trail, Simpsonville, SC 29681
    View profile for LinkIT Inc(864) 399-7444

  11. #11 Mailprotector

    Based in Greenville, 28 mi away

    55/100IFR Score

    Ranked #11 because of its Google rating and service focus: 4.6★ from 10 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 10 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    200 N Main St, Greenville, SC 29601
    View profile for Mailprotector(800) 393-4840

  14. #14 Merit Technologies

    Based in Greenville, 31 mi away

    54/100IFR Score

    Ranked #14 because of its Google rating and review volume: 4.9★ from 124 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 124 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    68 Pointe Cir #3202, Greenville, SC 29615
    View profile for Merit Technologies(864) 908-3577

  16. #16 Firestorm Cyber

    Based in Athens, 67 mi away

    54/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    1020 Garland Dr #350, Bogart, GA 30622
    View profile for Firestorm Cyber(706) 410-2966

  17. #17 SyHash

    Based in Five Forks, 38 mi away

    54/100IFR Score

    Ranked #17 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.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Sat 8:30 AM–6 PM · Sun closed
    View profile for SyHash(864) 469-8920

  18. #18 Rhinotech

    Based in Acworth, 53 mi away

    53/100IFR Score

    Ranked #18 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.

    • 5.0★ from 10 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for Rhinotech(678) 744-6601

  19. #19 Umbrella Technology Group

    Based in Greenville, 29 mi away

    53/100IFR Score

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

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 5 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    17 Maple Creek Cir Ste A, Greenville, SC 29607
    View profile for Umbrella Technology Group(864) 952-4101

  20. #20 CMIT Solutions

    Based in Buford, 69 mi away

    53/100IFR Score

    Ranked #20 because of its Google rating and service focus: 5.0★ from 14 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 14 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    4281 McBrayer Rd #200, Oakwood, GA 30566
    View profile for CMIT Solutions(678) 948-6101

  21. #21 Athens Micro

    Based in Athens, 64 mi away

    53/100IFR Score

    Ranked #21 because of its Google rating and review volume: 4.9★ from 182 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 182 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    7980 Macon Hwy, Watkinsville, GA 30677
    View profile for Athens Micro(706) 389-4848

How we ranked Clemson cybersecurity companies

We scored 75 Clemson 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 Clemson 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 Clemson: frequently asked questions

Who is the best cybersecurity company in Clemson?

By IFR Score, the highest-ranked cybersecurity company in Clemson, SC is One Click Fix Managed Services and Security with an IFR Score of 63/100. It has 5.0★ from 139 Google reviews. It is open 7 days a week. ANC Group - Greenville Managed IT Services Company (#2) and Eaton Corporation (#3) follow. We ranked 75 cybersecurity companies on nine factors, last updated November 9, 2026.

Which cybersecurity companies in Clemson work on weekends?

14 of 75 ranked cybersecurity companies post Saturday hours and 12 post Sunday hours. The highest-ranked open Saturdays are One Click Fix Managed Services and Security (#1), ANC Group - Greenville Managed IT Services Company (#2) and AT-NET Services (#5). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Clemson cybersecurity companies have?

The median Google rating among 75 rated cybersecurity companies in Clemson is 5.0★, with a median of 12 reviews. Asheville Computer Co - Managed Business IT Services has the most, 261 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 Clemson count in this ranking?

Yes, if they are within 75 mi of the Clemson 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 Clemson 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 Clemson

  1. November 2026: IFR Scores recalculated for 75 cybersecurity companies serving Clemson.

More cybersecurity companies and Clemson pages