Trial of a Harm Reduction Strategy for People With HIV Who Smoke Cigarettes

Inclusion Criteria: 1. Age 40-79 (the ACC/AHA PCEs risk score is only valid in this age range). 2. Current cigarette smoking ("Yes" to: "Have you smoked more than 100 cigarettes in your lifetime?" AND "Have you smoked a cigarette, even a puff, in the past 7 days?" 3. Lab-confirmed HIV infection 4. Willingness to participate in a web-based tobacco treatment (EX+) AND offer of varenicline 5. Access to internet at least weekly and ability to read at ≥7th grade level (necessary to participate fully in EX+ program). 6. Willingness to be randomized to one of the two study conditions Exclusion Criteria: 1. Pregnancy 2. Lack of insurance for specialty referral (we expect this exclusion to be rare because the great majority of people with HIV (PWH) at the Montefiore Medical Center have Medicaid or AIDS Drug Assistance Program (ADAP) 3. Contraindication to varenicline 4. Concurrent receipt of other cessation treatments 5. Evaluation in Cardiometabolic Clinic within the 12 months prior to enrollment 6. To minimize study contamination, eligible individuals who are spouses, partners, or roommates of participants will be excluded