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Email Security · Since 1999
Cybersecurity Services

Email Security Services in Los Angeles, CA

Email is the #1 entry point for cyberattacks — phishing, business email compromise, and executive impersonation cause the majority of data breaches and wire-fraud losses. Pro Link Systems delivers enterprise-grade, managed email security that stops threats before they ever reach your team's inbox.

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The inbox is the front door attackers use most

Email remains the most dangerous attack surface for any business. Phishing campaigns, business email compromise (BEC), and executive impersonation are responsible for billions in annual losses — and unlike malware, these attacks often bypass standard filters because they exploit trust, not code. A single convincing email to the right employee can trigger a fraudulent wire transfer, expose sensitive credentials, or install ransomware with one click.

Pro Link Systems takes a multi-layer approach to email security. We combine enterprise-grade filtering that blocks malicious content at delivery with authentication standards that prevent criminals from spoofing your domain to impersonate your executives and vendors. For organizations handling high-value transactions, we add advanced sandboxing and real-time BEC detection — the exact defenses that stop the targeted attacks behind most wire-fraud incidents.

Every solution we deploy is fully managed: we configure it, monitor it, and adjust it as the threat landscape evolves — so your team doesn't need to become email security experts.

Managed email security, end to end

From inbound filtering to outbound authentication, every layer is configured and monitored by our team.

Proofpoint Professional

Enterprise-grade email security that filters spam, phishing, and malware before delivery. The Professional tier delivers robust, fully managed inbound and outbound email defense — including protection against malicious links and attachments — for your entire organization. Covers the full spectrum of commodity threats that represent the majority of daily attack volume.

Protects against: Phishing, spam, and malware-laden attachments.
RECOMMENDED
Proofpoint Advanced Plus

Builds on Professional with advanced threat protection — real-time sandboxing of suspicious links and attachments, and dedicated defenses against business email compromise (BEC) and executive impersonation. BEC is the exact tactic behind most wire-fraud attempts targeting property managers, law firms, financial services, and any organization that processes payments. For high-transaction businesses, this is the tier we recommend.

Protects against: Business email compromise, executive impersonation, targeted spear-phishing, malicious URLs at click time.
Email Authentication (DMARC, DKIM, SPF)

While filtering protects your inbound mail, DMARC, DKIM, and SPF stop criminals from spoofing your domain to impersonate your executives and staff. A properly configured DMARC policy means fraudulent emails that appear to come from your company are rejected before they reach anyone — a critical control against the wire-fraud and vendor-impersonation attacks that most commonly target businesses like yours. We configure and maintain all three records and provide DMARC reporting.

Protects against: Domain spoofing, executive impersonation, outbound brand abuse, unauthorized use of your domain.
Data Loss Prevention & Email Encryption

DLP automatically detects and blocks sensitive information — financial records, account numbers, personal data — from leaving your organization by email, while encryption lets your team send confidential documents securely. Essential for any business handling regulated data, financial records, or client personal information.

Protects against: Data leakage, accidental exposure, insecure transmission of sensitive information, compliance violations.

Three layers of email defense

1

Filter at the gateway

Enterprise filtering inspects every inbound and outbound message before delivery, blocking malicious content, spam, and known phishing campaigns at the perimeter.

2

Sandbox suspicious content

Advanced threat protection detonates suspicious links and attachments in a safe environment to catch new and unknown threats that evade signature-based filters.

3

Authenticate your domain

DMARC, DKIM, and SPF standards verify that email claiming to come from your domain is legitimate — blocking criminal attempts to impersonate your business.

4

Train your people

Technical controls catch what they can, but a trained team is the last line of defense. Security awareness training closes the gap that technology alone cannot.

Email security — answered

Business email compromise is a targeted attack where criminals impersonate executives, vendors, or business partners — typically to redirect a payment, obtain sensitive data, or manipulate an employee into taking a harmful action. Unlike mass phishing, BEC is carefully crafted and often uses no malicious links or attachments, making it difficult for basic filters to catch. We stop BEC with a combination of advanced behavioral analysis (Proofpoint Advanced Plus), DMARC/DKIM/SPF authentication to block domain spoofing, and security awareness training to help your team recognize impersonation tactics.
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication standard that tells receiving mail servers what to do when email claims to come from your domain but fails authentication checks — typically to quarantine or reject it. Without DMARC, anyone can send an email that appears to come from your company's domain. We configure DMARC alongside DKIM and SPF, monitor reporting data, and gradually move you to enforcement (p=reject) — the only policy that fully prevents domain spoofing.
Proofpoint Professional provides enterprise-grade inbound and outbound filtering — blocking spam, phishing, and malware-laden attachments at delivery. Proofpoint Advanced Plus adds real-time URL and attachment sandboxing (detonating suspicious content in a safe environment before it's delivered) and dedicated BEC and executive impersonation protection. For businesses handling financial transactions, high-value wire transfers, or sensitive client data, we recommend Advanced Plus — it specifically addresses the attack vectors most likely to result in financial loss.
Yes. Proofpoint integrates directly with both Microsoft 365 and Google Workspace as a gateway in front of your mail flow — adding a protection layer that goes well beyond what Microsoft Defender for Office 365 or Google's built-in filtering provide, particularly for advanced phishing and BEC threats. We also harden your Microsoft 365 tenant configuration: disabling legacy authentication, enforcing MFA, and alerting on suspicious mailbox-forwarding rules (a classic sign of a compromised account).
Proofpoint gateway filtering can typically be deployed within a few business days for most organizations — we handle the DNS routing changes, configuration, and initial tuning. DMARC/DKIM/SPF configuration depends on your current DNS state but is generally completed within a week. We phase enforcement gradually to avoid blocking legitimate mail, monitoring reporting data before moving to reject policy.